Wrapper for a non-combustible cigarette and method for manufacturing the same

Abstract

To provide a method for manufacturing a wrapper for a non-combustion type cigarette that is used for an aerosol generating device.SOLUTION: A method includes the steps of: mixing a tobacco substance with first pulp to manufacture a plate-like leaf sheet; and mixing the plate-like leaf sheet with second pulp to manufacture a wrapper.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a wrapper for wrapping a non-combustible cigarette used in an aerosol generating device and a method for manufacturing the same.

Background Art

[0002] Recently, there has been an increasing demand for alternative methods to overcome the disadvantages of conventional cigarettes. For example, there has been an increasing demand for methods of generating an aerosol by heating an aerosol-generating substance that is not a method of burning a cigarette to generate an aerosol.

[0003] Wrappers used for combustible cigarettes have a low basis weight, a high porosity, and contain a combustion aid and a filler for combustion, and thus are not suitable for non-combustible cigarettes used in aerosol generating devices.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the present invention is to provide a wrapper for a non-combustible cigarette used in an aerosol generating device and a method for manufacturing the same.

[0005] The technical problems are not limited to those described above, and other technical problems can be analogized from the following examples.

Means for Solving the Problems

[0006] A method for manufacturing a wrapper for a non-combustible cigarette used in an aerosol generating device according to an embodiment includes: manufacturing a sheet-like leaf sheet by mixing a tobacco substance and a first pulp; and manufacturing a wrapper by mixing the sheet-like leaf sheet and a second pulp.

Effects of the Invention

[0007] Since the tobacco substance forms a pattern on the wrapper, a visually distinguishable cigarette can be provided.

[0008] By manufacturing a wrapper using unbleached pulp, cigarettes with visually distinguishable power can be provided, and the high tensile strength of the wrapper can be realized.

[0009] The effects of the invention are not limited by the content exemplified above, and more diverse effects are included in this specification.

Brief Description of the Drawings

[0010]

Figure 1

[0011]

Figure 2

[0012]

Figure 3

[0013]

Figure 4

Modes for Carrying Out the Invention

[0014] A method for manufacturing a wrapper for a non-combustible cigarette used in an aerosol generating device according to an embodiment includes: manufacturing a plate-shaped leaf sheet by mixing a tobacco substance and a first pulp; and manufacturing a wrapper by mixing the plate-shaped leaf sheet and a second pulp.

[0015] The step of manufacturing the plate-shaped leaf sheet includes manufacturing the plate-shaped leaf sheet by mixing at least any one of cigar leaf powder, cigar leaf cuttings, cigar leaves, and tobacco leaves as the tobacco substance and a first pulp.

[0016] The step of manufacturing the plate-shaped leaf sheet includes the step of manufacturing the plate-shaped leaf sheet by mixing at least one of unbleached pulp and bleached pulp as the tobacco substance and the first pulp.

[0017] The step of manufacturing the trumpet includes the step of manufacturing the trumpet by mixing at least one of unbleached pulp and bleached pulp as the plate-shaped leaf sheet and the second pulp.

[0018] The step of manufacturing the trumpet includes the step of manufacturing an uncoated trumpet by mixing the plate-shaped leaf and the second pulp; and the step of manufacturing a coated trumpet by coating the uncoated trumpet.

[0019] The trumpet for a non-combustible cigarette used in an aerosol generating device according to an embodiment has a tensile strength of 3.0 kgf / 15 mm or more and includes at least one of cigar leaf powder, cigar leaf cuttings, cigar leaves, and tobacco leaves.

[0020] The trumpet includes unbleached pulp.

[0021] The terms used in the examples were selected as general terms that are currently widely used as much as possible while considering the functions in the present invention. However, this may also vary depending on the intentions or precedents of those skilled in the art, the emergence of new technologies, etc. Also, in specific cases, there are terms arbitrarily selected by the applicant, and in that case, the meaning will be described in detail in the description part of the invention. Therefore, the terms used in the present invention are not just the names of the terms, but must be defined based on the meaning of the terms and the overall content of the present invention.

[0022] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those having ordinary knowledge in the technical field to which the present invention pertains can easily implement them. However, the present invention can be embodied in various different forms and is not limited to the embodiments described herein.

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0024] FIG. 1 is a drawing showing a cigarette according to an embodiment.

[0025] The cigarette 20000 is a non-combustible cigarette for use in an aerosol generating device. The cigarette 20000 includes a tobacco rod 21000 and a filter rod 22000. In FIG. 1, the filter rod 22000 is shown as a single segment, but is not limited thereto. That is, the filter rod 22000 may be composed of a plurality of segments. For example, the filter rod 22000 may include a first segment for cooling the aerosol and a second segment for filtering a predetermined component contained in the aerosol. Further, if necessary, the filter rod 22000 may further include at least one segment for performing other functions.

[0026] The cigarette 20000 is also packaged by at least one wrapper 24000. At least one hole may be formed in the wrapper 24000 through which external air flows in or internal gas flows out. As an example, the cigarette 20000 is also packaged by one wrapper 24000. As another example, the cigarette 20000 may be packaged in a superimposed manner by two or more wrappers 24000. For example, the tobacco rod 21000 may be packaged by the first wrapper, and the filter rod 22000 may be packaged by the second wrapper. Then, the tobacco rod 21000 and the filter rod 22000 packaged by individual wrappers are combined, and the entire cigarette 20000 may be repackaged by the third wrapper. If each of the tobacco rod 21000 or the filter rod 22000 is composed of a plurality of segments, each segment is also packaged by an individual wrapper. Then, the entire cigarette 20000 in which the segments packaged by individual wrappers are combined may be repackaged by a different wrapper.

[0027] The tobacco rod 21000 contains aerosol product substances. For example, the aerosol product substances can include, but are not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Further, the tobacco rod 21000 may contain other additive substances such as flavoring agents, wetting agents, and / or organic acids. Also, a flavoring liquid such as menthol or a humectant can be added to the tobacco rod 21000 by spraying it onto the tobacco rod 21000.

[0028] The tobacco rod 21000 can be manufactured in various ways. For example, the tobacco rod 21000 can be manufactured in a sheet form or in a strand form. Also, the tobacco rod 21000 can be manufactured from shredded tobacco in which the tobacco sheet is finely cut. Also, the tobacco rod 21000 is surrounded by a heat-conductive substance. For example, the heat-conductive substance can be a metal foil such as aluminum foil, but is not limited thereto. As an example, the heat-conductive substance surrounding the tobacco rod 21000 can evenly disperse the heat transferred to the tobacco rod 21000, improve the heat conductivity applied to the tobacco rod, and thereby improve the tobacco flavor. Also, the heat-conductive substance surrounding the tobacco rod 21000 can function as a susceptor that is heated by an induction heating type heater. At this time, although not shown in the drawings, the tobacco rod 21000 can further include an additional susceptor in addition to the heat-conductive substance surrounding the outside.

[0029] The filter rod 22000 is also a cellulose acetate filter. On the other hand, there is no limitation on the shape of the filter rod 22000. For example, the filter rod 22000 can be a cylindrical rod or a tubular rod having a hollow inside. Also, the filter rod 22000 can be a recessed rod. If the filter rod 22000 is composed of a plurality of segments, at least one of the plurality of segments is also manufactured in a different shape.

[0030] The filter rod 22000 may be manufactured to generate a fragrance. As an example, a flavoring liquid may be sprayed onto the filter rod 22000, or separate fibers coated with the flavoring liquid may be inserted inside the filter rod 22000.

[0031] In addition, the filter rod 22000 includes at least one capsule 23000. Here, the capsule 23000 may perform a function of generating a fragrance and may also perform a function of generating an aerosol. For example, the capsule 23000 is also a structure in which a liquid containing a fragrance is covered with a film. The capsule 23000 can have a spherical or cylindrical shape, but is not limited thereto.

[0032] If the filter rod 22000 includes a segment for cooling the aerosol, the cooling segment is also manufactured from a polymer material or a biodegradable polymer material. For example, the cooling segment is made of only pure polylactic acid, but is not limited thereto. Alternatively, the cooling segment is made of a cellulose acetate filter having a plurality of perforations formed therein. However, the cooling segment is not limited to the above-described examples, and any material that can perform the function of cooling the aerosol is applicable without limitation.

[0033] On the other hand, although not shown in FIG. 1, a cigarette 20000 according to an embodiment may further include a front filter. The front filter is located on one side of the tobacco rod 21000 facing the filter rod 22000. The front filter can prevent the tobacco rod 21000 from detaching to the outside and prevent the liquefied aerosol from flowing from the tobacco rod 21000 to the aerosol generating device during smoking.

[0034] FIG. 2 is a flowchart showing a method of manufacturing a trumpet according to an embodiment.

[0035] FIG. 2 shows a method for manufacturing a wrapper for packaging a non-combustible cigarette used in an aerosol generating device.

[0036] In one embodiment, the wrapper is a wrapper for use as the outermost skin of a cigarette. Differently, the wrapper is also a wrapper for use as the inner skin of a cigarette.

[0037] In step 21, a plate-shaped leaf sheet is manufactured by mixing a tobacco substance and a first pulp.

[0038] In one embodiment, the plate-shaped leaf sheet can be manufactured by mixing a tobacco substance and a first pulp. In one embodiment, a papermaking process can be used to manufacture the plate-shaped leaf sheet. For example, a papermaking process using a fourdrinier can be used to manufacture the plate-shaped leaf sheet. Also, a cylinder mould papermaking process can be used to manufacture the plate-shaped leaf sheet.

[0039] The tobacco substance includes at least any one of cigar leaf powder, cigar leaf cuttings, cigar leaves, and tobacco leaves.

[0040] In one embodiment, the tobacco substance includes cigar leaf powder. Cigar leaves are tobacco leaves used to manufacture cigarettes. Tobacco leaves can be, but are not limited to, yellow varieties, burley varieties, native varieties, cigar varieties, or oriental varieties. In other embodiments, the tobacco substance may include cigar leaf cuttings or cigar leaf powder. Cigar leaf cuttings and cigar leaf powder can be obtained by cutting or grinding cigar leaves. Alternatively, cigar leaf cuttings and cigar leaf powder can be obtained from by-products generated during the processing of tobacco leaves.

[0041] The first pulp includes at least any one of unbleached kraft pulp (UKP) and bleached kraft pulp (BKP).

[0042] In one embodiment, the first pulp includes unbleached pulp. By using unbleached pulp, the tensile strength of the finally produced wrapper can be improved. Also, by adding color to the wrapper finally produced by the unbleached pulp, cigarettes with visually distinguishable features can be provided. In other embodiments, the first pulp may include bleached pulp.

[0043] After the tobacco material and the first pulp are mixed and then dried, a sheet-like leaf sheet can be manufactured. The weight ratio of the tobacco material to the first pulp can be set in consideration of the hue, pattern, tensile strength, etc. of the finally produced wrapper. For example, the sheet-like leaf sheet can be manufactured by blending cigar leaf powder and unbleached pulp at a weight ratio of 90:10. As another example, the sheet-like leaf sheet can be manufactured by blending cigar leaf powder and unbleached pulp at a weight ratio of 10:90.

[0044] Table 1 shows the quality analysis results of cigar leaf powder, Table 2 shows the quality analysis results of the sheet-like leaf sheet, and Table 3 shows the reduction rate of the components in Table 1 compared to the components in Table 2.

[0045]

Table 1

[0046]

Table 2

[0047]

Table 3

[0048] Referring to Tables 1 to 3, in the case of cigar leaf powder, the hot water extract (Hot Water Soluble, HWS) reaches an average of 39.6% by weight and nicotine reaches an average of 0.97% by weight. Therefore, when directly using cigar leaf powder in the manufacturing process of a trumpet, biological wastewater treatment is substantially impossible. At this time, biological wastewater treatment means continuously culturing a mixed population of microorganisms in the presence of dissolved oxygen using a culture vessel for various organic substances contained in the wastewater, and removing the organic substances by means of actions such as aggregation, adsorption, oxidation, decomposition, and precipitation. For biological wastewater treatment, activated sludge, which is a culture body composed of a mixed population of microorganisms of different solid groups such as bacteria, protozoa, and metazoa, can be used. On the other hand, in the case of the plate-shaped leaf sheet, the hot water extract is 8.72% by weight on average and nicotine is 0.06% by weight on average. When manufacturing the plate-shaped leaf sheet, the hot water extract decreases by 78.0% and nicotine decreases by 94.0% compared to cigar leaf powder. Therefore, after manufacturing the plate-shaped leaf sheet by the manufacturing method of this example and then manufacturing a trumpet, biological wastewater treatment of pollutants is possible in the manufacturing process of the trumpet. In step 22, a trumpet is manufactured by mixing the plate-shaped leaf sheet and the second pulp.

[0049] In one embodiment, a papermaking process may be used to manufacture a trumpet.

[0050] The second pulp may include at least one of bleached pulp and unbleached pulp.

[0051] For example, a trumpet can be manufactured by mixing a plate-shaped leaf sheet and bleached pulp. When the plate-shaped leaf sheet contains tobacco substances and unbleached pulp in a weight ratio of 90:10, and the plate-shaped leaf sheet and bleached pulp are blended at a ratio of 25:75, a trumpet containing 22.5% of tobacco substances, 2.5% of unbleached pulp, and 75% of bleached pulp can be manufactured.

[0052] Figure 3 shows a trumpet manufactured by the manufacturing method according to one embodiment.

[0053] The trumpets shown in Fig. 3 are trumpets manufactured by blending a plate-shaped leaf sheet and a second pulp at different ratios. Specifically, trumpet 1 is manufactured by blending a plate-shaped leaf sheet and bleached pulp at a ratio of 0:100, trumpet 2 is manufactured by blending a plate-shaped leaf sheet and bleached pulp at a ratio of 20:80, trumpet 3 is manufactured by blending a plate-shaped leaf sheet and bleached pulp at a ratio of 30:70, trumpet 4 is manufactured by blending a plate-shaped leaf sheet and unbleached pulp at a ratio of 0:100, trumpet 5 is manufactured by blending a plate-shaped leaf sheet and unbleached pulp at a ratio of 20:80, and trumpet 6 is manufactured by blending a plate-shaped leaf sheet and unbleached pulp at a ratio of 30:70.

[0054] Trumpets 4-6 have a different hue from trumpets 1-3 due to the unbleached pulp. Trumpets 1-3 have different patterns from each other depending on the blending ratio of the plate-shaped leaf sheet. Also, trumpets 4-6 have different patterns from each other depending on the blending ratio of the plate-shaped leaf sheet.

[0055] It can be seen from Fig. 3 that trumpets with various hues and patterns can be manufactured depending on the blending ratio of the plate-shaped leaf sheet and the second pulp. When unbleached pulp is used as the second pulp, a brownish trumpet is manufactured, and the higher the ratio of the plate-shaped leaf sheet, the denser the pattern by the plate-shaped leaf sheet. Therefore, the weight ratio of the tobacco substance and the second pulp can be set in consideration of the hue, pattern, etc. of the finally produced trumpet.

[0056] Table 4 is a table showing the physical properties of the trumpets in Fig. 3.

[0057]

Table 4

[0058] It can be seen from Table 4 that the physical properties of the trumpet can be adjusted by adjusting the blending ratio of the plate-shaped leaf sheet and the second pulp. Therefore, the weight ratio of the tobacco substance and the second pulp can be set in consideration of the physical properties of the finally produced trumpet.

[0059] Figure 4 illustrates a cigarette wrapped by a wrapper manufactured by the manufacturing method according to an embodiment. Figure 4 shows a cigarette wrapped by a wrapper having a pattern. By wrapping a cigarette with a wrapper manufactured by the manufacturing method according to the present embodiment, it is possible to provide a cigarette with visually distinguishable power with respect to existing cigarettes used in an aerosol generating device.

[0060] Table 5 shows the physical properties of the wrapper according to an embodiment.

[0061]

Table 5

[0062] Table 5 shows the physical property differences between an uncoated wrapper produced by mixing a tabacco substance and unbleached pulp in a weight ratio of 90:10 and a coated wrapper produced by mixing bleached pulp in a weight ratio of 25:75, and an uncoated wrapper coated with 2% by weight of PVA (polyvinyl acetate). Referring to Table 5, the tensile strength of the uncoated wrapper is 3.45 kgf / 15 mm in the MD (Machine Direction) and 1.92 kgf / 15 mm in the CD (Cross Direction). The tensile strength of the coated wrapper is 4.11 kgf / 15 mm in the MD and 2.17 kgf / 15 mm in the CD. Thus, it can be seen that a wrapper having a tensile strength of 3.0 kgf / 15 mm or more can be manufactured. Since the tensile strength of the wrapper is 3.0 kgf / 15 mm or more, the problem of the wrapper breaking during the manufacturing operation of the wrapper is prevented. Therefore, splicing (the connection process during automatic replacement of the wrapper) can be used in the process of manufacturing the coated wrapper and the uncoated wrapper. Furthermore, in the case of the coated wrapper, since the tensile strength is 4.0 kgf / 15 mm or more, splicing is smoothly performed. In Table 5, PVA was used as the coating material, but in other embodiments, other coating materials such as GUM and starch can be used. Also, in Table 5, 2% by weight of PVA was used as the coating material, but in other embodiments, the weight of PVA may be different.

[0063] Table 6 shows the thermogravimetric analysis results obtained from the samples.

[0064]

Table 6

[0065] The samples include an uncoated wrapper produced by mixing a tabular leaf sheet containing a tobacco substance and unbleached pulp in a weight ratio of 90:10 and bleached pulp in a weight ratio of 25:75, a coated wrapper obtained by coating the uncoated wrapper with 2% by weight of PVA, and PVA. Referring to Table 6, since no components were detected from the overall samples, it can be seen that it is safe to use cigarettes wrapped with the wrapper coated with PVA in an aerosol generating device. Table 7 shows the analysis results of the smoke components obtained from the samples.

[0066]

Table 7

[0067] The samples include cigarettes wrapped with existing wrappers manufactured by a conventional method, cigarettes wrapped with an uncoated wrapper produced by mixing a tabular leaf sheet containing a tobacco substance and unbleached pulp in a weight ratio of 90:10 and bleached pulp in a weight ratio of 25:75, and cigarettes wrapped with a coated wrapper obtained by coating the uncoated wrapper with 2% by weight of PVA. Referring to Table 7, the smoke components of the cigarettes wrapped with the uncoated wrapper and the cigarettes wrapped with the coated wrapper are similar to the smoke components of the cigarettes wrapped with the existing wrapper. Therefore, it can be seen that it is possible to obtain smoke components at an equivalent level in comparison with cigarettes wrapped with the existing wrapper from the cigarettes wrapped with the wrapper manufactured by the manufacturing method according to this example. Table 8 shows the results of the sensory evaluation of the samples.

[0068]

Table 8

[0069] The samples include cigarettes wrapped in existing trumpets manufactured by the conventional method, cigarettes wrapped in uncoated trumpets produced by mixing a plate-shaped leaf sheet containing a tobacco substance and unbleached pulp in a weight ratio of 90:10 and bleached pulp in a weight ratio of 25:75, and cigarettes wrapped in coated trumpets with 2% by weight of PVA coated on the uncoated trumpets. For 20 general users, a sensory evaluation was conducted for 9 items based on a full score of 7 points for each item. The 9 items include the amount of atomization, persistence of atomization amount, inhalability, mainstream smoke heat sensation, cigarette surface heat sensation, taste intensity, irritation, abnormal odor, and overall tobacco taste. Referring to Table 8, the cigarettes wrapped in uncoated trumpets and the cigarettes wrapped in coated trumpets have equivalent or excellent evaluation scores compared to the cigarettes wrapped in existing trumpets. In particular, in terms of the items of persistence of atomization amount and overall tobacco taste, the cigarettes wrapped in uncoated trumpets and the cigarettes wrapped in coated trumpets have excellent evaluation scores compared to the cigarettes wrapped in existing trumpets. Therefore, it can be seen that the cigarettes wrapped in the trumpets manufactured by the manufacturing method according to this embodiment have equivalent or excellent quality levels compared to the cigarettes wrapped in existing trumpets.

[0070] Those having ordinary knowledge in the technical field related to this embodiment will be able to understand that it can be embodied in a modified form within the scope not deviating from the essential characteristics described above. Therefore, the disclosed method should be considered from an illustrative perspective rather than a limiting perspective. The scope of the present invention is shown not in the foregoing description but in the claims, and all differences within the equivalent scope thereof should be construed as being included in the present invention.

Claims

1. A method for manufacturing a wrapper for a non-combustible cigarette used in an aerosol generating device, comprising: manufacturing a plate-shaped leaf sheet by mixing and drying a tobacco substance and unbleached pulp as a first pulp; manufacturing a wrapper by mixing the plate-shaped leaf sheet and bleached pulp as a second pulp.

2. The step of manufacturing the plate-shaped leaf sheet comprises: manufacturing the plate-shaped leaf sheet by mixing at least one of cigar leaf powder, cigar leaf cuttings, cigar leaves, and tobacco leaves as the tobacco substance and the first pulp, the method according to claim 1.

3. The step of manufacturing the wrapper comprises: manufacturing an uncoated wrapper by mixing the plate-shaped leaf sheet and the second pulp; manufacturing a coated wrapper by coating the uncoated wrapper, the method according to claim 1 or 2.

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