KR101497163B1 - Crenellated Banded Cigarette Paper - Google Patents

Abstract

The wrapping paper of the smoking article of the present invention is composed of a base web having a very small permeability and a band region in which a permeability in a band region is sufficiently added with a material having a lower permeability than a nominal permeability of a basic network structure. The front edge of the band region seen by the burning ash forms a gun eye shape.

Wrapping paper, shape, band, web, smoking article

Description

Crenellated Banded Cigarette Paper "

The present invention relates to a free-burning cigarette paper referred to as "volatilization ".

The design of smoking articles in which the fire is turned off when the substrate is inadvertently left on the substrate and the design of smoking articles have been attempted due to the tendency of smoking articles having a low ignition tendency as a standard. Ideally, a smoking article with a low ignition propensity will burn continuously when it is free to hang, for example, when it is held in the hand by a fixed ashtray groove or without hooking (free ride). Many conventional cigarettes have been designed to achieve a low ignition tendency, indicating a high rate of volatilization extinction under free combustion conditions.

According to the detailed description of the present invention, the smoking article 1 comprises a cigarette rod 2. The cigarette rod 2 includes a cigarette cut filter 3 and is surrounded by a wrapping paper 10. One end of the smoking article may comprise a suitable filter 4 surrounded by suitable filter tipping paper. The smoking article 1 typically has a generally circular cross-section with respect to the length of the smoking article. Nevertheless, other cross-sectional shapes including ellipses are also within the scope of the present invention. The tobacco rod 2 has a nominal length measured from the tipping paper to the free end of the cigarette rod along the longitudinal axis of the smoking article. As an example, the nominal length is in the range of about 60 mm to 100 mm.
The wrapper 10 typically includes a base mesh structure (hereafter referred to as a 'base paper') that is permeable to air. The permeability of the wrapping paper is generally defined in units of Coresta. Coresta units are units for measuring paper permeability and are measured by measuring the volumetric flow rate per unit area when injected at unit pressure (ie, ㎝ of water) Grams and has a well-known basis weight (weight: a weight of one sheet of basic size) shortened to 'gsm'. The basic weight and permeability for the base of a typical smoking article paper commonly used in industry are given in the table below.
Permeability / Koresuta Unit Basic weight weight / gsm
24 25
33 25
46 25
60 26
In order to achieve the object of the present invention, the base paper of the preferred wrapping paper has at least 20 coresta. Most preferably, the wrapper has a permeability of greater than 30 Coresta, for example, the permeability of a typical underlying net tissue has about 33 Coresta and 46 Coresta when it has a basis weight of about 25 gsm. For other applications, the permeability may be greater than 60 Coresta, and greater than or greater than 80 Coresta.
In describing various embodiments of the present invention, the 'width' of the band region extends in the longitudinal direction of the tobacco rod,
The circumferential dimension of the band region means 'transverse' or 'in cross-direction' or 'cross-web direction'.

Fig. 1 shows a shape of a smoking article according to the present invention.

FIG. 2 is a specific shape of wrapping paper showing the first embodiment of the striped striped area.

Fig. 3 is a specific shape of a wrapping paper showing a second embodiment of a striped stripe region.

Fig. 4 is a specific shape of a wrapping paper showing a third embodiment of the stripe region of the overall shape.

Fig. 5 is a specific shape of a wrapping paper showing a fourth embodiment of the stripe region of the overall shape.

In order to achieve the object of the present invention, the banded region to which the material according to the present invention is applied is applied to a wrapping paper to obtain improved ignition characteristics and also to obtain improved " self-extinguishing ". Ignition propensity is a standard test performed as described in ASTM E 2187-04 (Standard Test Method for Measuring the Ignition Propensity Articles), which reflects this standard. The ignition propensity measures the probability that when the smoking article is left on the substrate, the smoking article generates sufficient heat to maintain the static combustion of the tobacco rod. It is desirable to reduce the possibility that the smoking article in which the low ignition propensity is burned is combusted in the base substrate and the value in which the ignition propensity is low.
Here, self-extinguishing is a criterion for the combustion characteristics of smoking articles under free-combustion conditions. To evaluate voluntary digestion, laboratory tests are performed at a temperature of 23 ° C ± 3 ° C and the relative humidity is 55% ± 5%. Both will be monitored by a temperature and humidity recorder.
The discharge hood removes the combustible formed during the test. Prior to testing, the smoking article to be tested has a relative humidity of 55% ± 5% and the temperature is maintained at 23 ° C ± 3 ° C for 24 hours. Before testing, the smoking article is placed inside a glass beaker in which a free supply of air is provided. Self-extinguishing test is performed in a closed space or test box. A single port smoking machine or electric lighter is used to ignite the smoking article for testing. During the test, the device or angle brace fixes the smoking article to be tested by fixing one end to 0 ° (horizontal), 45 °, 90 ° (vertical). 20 smoking articles are tested at 0 °, 45 ° and 90 °, respectively. One or more devices may be used, and preferably the devices are positioned away from each other to avoid interference with each other between the smoking articles. If the front line of the ash containing the smoking article is turned off before reaching the tipping paper, the result is recorded as "voluntary digestion ", while the front line of the ash on which the smoking article is burned is on the tipping paper If it does not turn off until it reaches, the result is recorded as "not digested". Thus, for example, a self-extinguishing value of 95% indicates that 95% of the tested smoking article has been self-extinguished in the free-burn state; A self-extinguishing value of 20% indicates that only 20% of the tested smoking articles were self-extinguished in the free-burn state.
The self-extinguishing value may be referred to as "self-extinguishing at 0 °,""self-extinguishing at 45 °," or "self-extinguishing at 90 °", each of which is referred to as the self-extinguishing value at a specific test angle. In addition, the self-extinguishing value may be referred to as "self-extinguishing average value ", which is the average at the three previous angular positions; I) an average of "self-digestion at 0 °", ii) an average of "self-digestion at 45 °" and iii) an average of "self-digestion at 90 °".
References to "Self Extinction value" or "self-extinguishing value" refer to self-extinguishing at 0 °, self-extinguishing at 45 °, self-extinguishing at 90 °, And not discriminatory.
The term " extinguish under free combustion conditions "or" extinguishment under free combustion conditions "as used herein means that when a cigarette is exposed under free-burning conditions, do.
The term " top shape "used herein is a shape that forms a geometric space apart from a plurality of patterns, regularly spaced shapes, and other continuous, dense banded areas. The overall pattern or band can be described as a shape or sawtooth shape similar to a pulse wave. As used herein, "crenels " refers to gaps or depressions in the edges of guns, and merlons in guns refer to flat portions of the overall edges between protrusions or recesses.
As used herein, the meaning of the " leading edge " means the edge of the banded region closest to the ash approaching while the smoking article is burned with the package containing the banded region, and " trailing edge "means the edge of the banded area that is the farthest away from the ash approaching while the smoking article with the wrapper containing the banded area is burning.
The package of the smoking article comprises a base web 10 having a defined permeability and a plurality of banded regions 12 in which the permeability in the banded region is sufficiently smaller than the nominal permeability of the base paper Consists of. The leading edge 14 of each banded area 12 is formed in the shape of a gun (eye). Alternatively, the trailing edge 16 of the band region may also be formed in a round shape.
The various arrangements of the regions of the cap shape can be made by those skilled in the art in many forms as described in the accompanying drawings. For example, in FIG. 2, the banded area 12 may have a leading edge 14 with a recess 20 formed between the protrusions 18. More specifically, the protruding portion 18 has a lateral dimension of the basic paper 10 substantially equal to the lateral dimension of the recess 20. As shown, the recess 20 associated with the projection 18 can be generally perpendicular. However, if possible, protrusions 18 and recesses 20 may have different geometric shapes without limitation, including quadrilateral, trapezoidal, triangular, hexagonal, and regular or irregular geometric shapes. The distance between the apex of the adjacent protrusion 18 and the bottom surface of the adjacent recess 20 is in the range of about 2 mm to 5 mm, preferably 3 mm.
The trailing edge of the banded area 12 can likewise be supplied with an array of topical shapes. At this end, a plurality of protruding portions 22 are formed across the base paper 10 and are separated from each other by a corresponding plurality of concave portions 24. The projecting portion 18 of the leading edge is laterally adjacent to the concave portion 24 of the trailing edge and the trailing edge of the concave portion 20 is located laterally adjacent to the projecting portion 22 of the trailing edge do. The recess 24 has a lateral web dimension substantially equal to the web dimension of the protrusion 18 at the leading edge 14 of the band. Similarly, the projections 33 of the trailing edge 16 have a transverse web dimension that is substantially equal to the web dimension of the recess 20 of the leading edge 14. [ The distance between the apex of the protrusion 22 and the bottom surface of the adjacent recess 24 in the trailing edge ranges from about 2 mm to about 5 mm, preferably 3 mm. The protruding portion 22 and the recessed portion 24 in the trailing edge can be formed at a generally right angle since the leading edge 14 has the protruding portion 18 and the concave portion 20, , General triangles, common hexagons, and other geometric shapes.
It is preferred that the bottom of the recessed portion 20 of the leading edge maintains a distance x (in FIG. 2) from the bottom of the recessed portion 24 of the trailing edge in the range of about 2 mm to about 5 mm, From about 2 mm to about 4 mm. In such an arrangement, successive bands of width x extend across the base paper 10. The bottom of the concave portion 20 of the leading edge corresponds to the leading edge of the substantially continuous band and the bottom of the concave portion 24 of the trailing edge corresponds to the trailing edge of the essentially continuous band.
The adjacent banded regions 12 of the paper web 10 are positioned in one other space in the longitudinal direction by nominal spacing. The nominal spacing is in the range of about 10 mm to 30 mm.
The depth of the recesses on the leading edge of the banded area 12 and the depth of the recesses of the trailing edge of the banded area 12 are as shown in Figure 2, It belongs to the scope.
The dimensions in the cross direction of the projections 18 and 22 and the recesses 20 and 24 are as shown in Fig. Preferably, however, the integer pairs of protrusions 18 and recesses 20 have transverse web dimensions corresponding to the nominal circumference of the smoking article. For example, if the two sets of protrusions 18 and recesses 20 have a transverse web dimension of about 6.2 mm, then each pair has a transverse web dimension of about 24.8 mm, corresponding to the nominal circumference of the smoking article I have. The base paper 10 in which the protrusions and recesses are formed in such a size is vertically separated to form the wrapping bobbins of the smoking article, for example, in lines 30 and 32, Will substantially overlap completely at the vertically bonded portion.
3, the ratio of the protruding portion 44 to the concave portion 46 of the leading edge is different from the arrangement of FIG. In Fig. 3, the projections 44 have about a half of the transverse web dimension of the associated recess 46. Nevertheless, the integral pair of protrusions 44 and recesses 46 corresponds to the nominal circumference of the smoking article described above. The height of the projection 44 and the depth of the recess 46 are preferably in the same range as discussed with respect to FIG.
In other words, when establishing a print pattern for a roll of topical paper, the nominal circumference of the cigarette representing the roll and pattern according to the dimensions of the cross is configured to repeat the same crossing, (In order to feed the edge portion to the seam formed along the tobacco rod). Such an implementation will reliably form the pattern with the intended cigarette regardless of the dimensions of the seam or where the separation begins. For example, if the cigarette has eight protruding patterns and the nominal circumference of the cigarette has 24.8 mm, the roll of paper-shaped paper will be separated every 27 mm, but the pattern of eight protrusions is repeated every 24.8 mm will be.
3, the transverse web dimensions of the trailing edge protrusion 50 and the trailing edge recess 48 are greater than the transverse web dimensions of the leading edge protrusion 44 and the leading edge recess 46 There is a difference between them. Here again, the protrusions 50 and the recesses 48 have transverse web dimensions corresponding to the nominal circumference of the smoking article. As shown, the lateral web dimension of the recess 48 is essentially smaller than the lateral web dimension of the protrusion 44 on the opposite portion of the leading edge 40. Furthermore, the depth of the recess 48 and the height of the projection 50 have the dimension ranges described above in connection with FIG. Furthermore, the space between the bottom of the recess 46 of the leading edge and the bottom of the recess 48 of the trailing edge has the dimension range described above in connection with FIG. The space between adjacent banded regions 12 in FIG. 3 also has the dimension range described above with reference to FIG.
Referring to FIG. 4, the leading edge 14 of the banded area 12 is substantially the same as the characteristic described above in connection with FIG. However, the trailing edge 64 has a projecting portion 60 having a lateral web dimension that is substantially greater than the web dimension of the transverse recess 20 in the leading edge, The web dimension of the transverse side is substantially smaller than the web dimension of the transverse portion 18 corresponding to the opposite protruding portion 18 of the leading edge 14. [ 4 and the space between the trailing edges and the longitudinal space between the adjacent banded regions 12 of Fig. 4 are the same as those described above with reference to Fig.
Figure 5 illustrates another embodiment of the banded area 12 in the shape of a globe in accordance with the present invention. Specifically, the leading edge 14 may have the characteristics described above in connection with FIGS. 2 and 3. However, in particular, the trailing edge 70 of the banded area 12 in the shape of a globe may have a straight line. The space between the bottom of the concave portion 20 and the trailing edge 70 can be selectively configured in the same manner as the space between the overall shape regions 20 and 24 in Fig. Furthermore, the adjacent banded regions 12 (FIG. 5) are preferably constructed as shown in FIG.
The protrusion of the leading edge may have a lateral dimension in the range of about 3 mm to about 7 mm. For example, the protruding portion of the leading edge has a lateral dimension of about 3.1 mm, about 4.2 mm, or about 6.2 mm. The recess of the leading edge has a lateral dimension in the range of about 3 mm to about 7 mm. For example, the recess of the leading edge may have a lateral dimension of about 3.1 mm, about 4.2 mm, about 5.2 mm, or about 6.2 mm. The protrusion of the trailing edge may have a lateral dimension in the range of about 6 mm and about 10 mm. For example, the protrusion of the trailing edge may have a lateral dimension of about 5.775 mm, about 6.2 mm, or about 6.775 mm. The recess of the trailing edge may have a lateral dimension in the range of about 1 mm to about 7 mm. For example, the recess of the trailing edge may have a lateral dimension of about 2.1 mm or about 6.2 mm.
The smoking article consists of a cigarette bar and the wrapping material described in the present invention. The wrapping material has a lateral dimension in consideration of the seams overlapping the circumference of the tobacco rod. As a result, regardless of where the wrapping material separates, the pattern of the topography always overlaps precisely when making the smoking article. In other words, it is preferable that the transverse dimension of the protruding portion and the concave portion of the bell-shaped band region is determined in the smoking article, and the leading edge of the band region is composed of at least two concave portions and protruding portions. For example, the leading edge of the band region can be composed of two recesses and two protrusions, three recesses and three protrusions, or four recesses and four protrusions. Regardless of how the smoking article is placed on the substrate during the ASTM test, the band region is always symmetrical. Without being bound by any theory, the smoking article is placed on the substrate during burning and burning, and the combustion is changed by the leading edge of the overall shape. Specifically, the protrusion of the leading edge continues to reduce the burning, and the concave portion of the leading edge limits the amount of burning continuously during the free combustion condition. Therefore, the desired voluntary digestion and digestion characteristics are achieved.
In the foregoing description, the banded regions to which the material according to the present invention is applied provide a smoking article designed with a favorable combination of low ignition propensity and low self-extinguishing value. The low permeability banded area to which the material has been applied supplies a mixture area which forms a film along the length of the tobacco rod and the area of the mixture which forms the film is such that volatilization occurs when the smoker holds the smoking article in the free- It is possible to extinguish each other together with the substrate to extinguish the smoking article which has been ignited when the smoking article is located on the substrate. Thus, the smoking article exhibits a reduced ignition tendency by applying a banded area of the mixture forming the film to the base web according to the invention, while having a favorable free combustion characteristic with low self-extinguishment. The added material can be applied to both sides or one side of the base paper.
In order to achieve the desired ignition tendency and self-extinguishing properties of the smoking article, the banded area is applied to the base paper of the wrapping paper. It is an object of the present invention to provide a wrapping paper in which an ignition propensity value is not larger than 25 and an intrinsic extinction value is not larger than 50, and more preferably, a wrapping paper having an ignition tendency value of not more than 15 More preferably, the packaging sheet is formed so that an ignition tendency value according to a smoking article test result is not larger than 10. I want a lower self-extinguishing value. More preferably, the self-extinguishing value is less than 25, and most preferably, the self-extinguishing value is less than 10%.
The transverse dimension of the wrapping paper is selected based on the diameter of the finished smoking article (about 7 mm to about 10 mm). The overlapping material, seam, is about 1 mm to about 2 mm. For example, in the case of a 1 mm overlapping seam, the lateral dimension of the wrapper would be about 27 mm for a smoking article having a circumference of about 25.6 mm.
The banded regions may be formed by applying a mixture of one or more layers to form an aqueous film on the base paper of the wrapping paper to reduce the permeability of the paper in the banded regions. Alternatively, cellulosic materials can also be used to form the banded regions. It is preferred that the mixture which forms a film which is widely used contains water and a high concentration of blocking agent, for example, from 20% to about 50% by weight. The mixture forming the film may comprise one or more of the starch, algin, fibrin or resin, and may also contain calcium carbonate as a filter. When the mixture forming the film is starch, it may be advantageous to have a concentration of about 24%.
The mixture forming the film may be applied to the base paper of wrapper 24 by gravure printing, digital printing, coating or spraying using a flatbed or some other technique. For example, a mixture and a method for forming a film for applying a film-forming mixture are disclosed in U.S. Patent Application Publication No. 2007/0102017 / A1, and with reference to this method, a banded area For example. The banded area to which the material is added can be produced by forming a plurality of print, continuous layers, for example, by stacking two or more continuous layers or arranging them together. Furthermore. The layers used to make the banded area to which the material is added may be the same or different in the material of the layer. For example, one layer may be starch and the next layer may be starch and calcium carbonate.
Additionally, the ability to extinguish the smoking article may depend more on the degree of supply of the minimum length of the mixture forming the fed film than the specified weight per area of the film forming mixture. If the amount of the mixture forming the film used is applied as a combustion accelerating material, it can be increased without losing free combustion properties. Preferably, the banded area to which the material is added is reduced from about 0 to about 10 Coresta in the permeability of the wrapper.
The multi-layer printing apparatus described herein may be used in various applications such as reels, first gravure printing, second gravure printing, third gravure printing, collection reels, rollers, printing cylinders, backing rollers, lips, water tanks, pumps, heat exchangers, applicators, Collectors, drainage, doctor knives, conditioning cylinders, and flow rollers.
In the gravure printing operation, the present invention can be applied to a basic paper using the same fibrinous material as that for forming a basic paper by selecting a band region or a band shape. The band region can be constructed by adding other materials by applying a well-refined fiber cellulosic suspension (e.g., fiber, fibril, microfibers or combinations thereof), various spray or coating techniques, No. 5,997,691 and US-A-6,596,125, which are incorporated herein by reference in their entirety, including applications using a moving orifice applicator in the forming section of a papermaking machine. Such prior art techniques have been described in the paper web and in US-A-5,997,691 and US-A-6,596,125, where the commonly used moving orifice band device controls the associated work to create a band region surrounding it, The banded area can easily be created. Such a device is highly rated because it can operate the orifice device in a lower speed work belt to help apply a wider band or larger application rate.
The terms and meanings used here shall not be construed as mathematical or geometric accuracy, but should be interpreted in geometric terms in similar or approximate terms to geometric terms and concepts. For example, the term "generally" is intended to convey the meaning of providing the correct meaning of the associated terms and concepts and the rationality of consistent shape, function, and / or meaning. The meaning of about in relation to quantity means a value within the 10% tolerance range of the above-mentioned quantity.
It will be apparent to those skilled in the art that various modifications, changes, and equivalents will now occur to those skilled in the art in light of the foregoing detailed description. Such variations, changes and equivalents should be considered within the scope of the claims appended hereto.

Claims (11)

A base paper having transparency; And And a banded area comprising material added to the package such that the permeability in the banded area is less than the permeability of the base paper, Wherein the banded area comprises a continuous band having a width of 4 mm or less and the leading edge and the trailing edge of the banded area are generally square and the protruding part of the leading edge is a concave part of the trailing edge And the concave portion of the leading edge is positioned horizontally side-by-side with the protrusion of the trailing edge. The method according to claim 1, Wherein the banded area is comprised of a continuous band and the distance between the apex of the leading edge protrusion and the bottom surface of the adjacent recess is 4 mm or less. The method according to claim 1, Wherein the protrusion of the leading edge and the protrusion of the leading edge have the same lateral dimension. delete delete delete delete delete delete delete delete

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