Tobacco packaging materials and cigarette cases containing them

Abstract

The present invention relates to an environmentally friendly and physically superior cigarette packaging material. In one view, a cigarette packaging material comprising polyolefin and calcium carbonate, and a cigarette case comprising such cigarette packaging material are provided.

Description

[Technical Field] 【0001】 The present disclosure relates to packaging materials for cigarettes, and more specifically, to cigarette packaging materials and cigarette cases containing the same. [Background technology] 【0002】 In the tobacco manufacturing process, when cigarettes are packaged in boxes of two or more, the method used involves wrapping each box's quantity of cigarettes in an inner liner, and then wrapping the outside with box packaging paper. 【0003】 On the other hand, box packaging paper and inner liners are generally made of paper. Such paper is characterized by being produced from pulp manufactured by mechanically or chemically processing wood or other plant materials. [Overview of the Initiative] [Problems that the invention aims to solve] 【0004】 Generally, when paper is used as packaging material for cigarettes, the manufacturing process requires the mechanical or chemical treatment of wood and other plant materials, which poses a problem of damaging forests. Furthermore, paper packaging materials contain bleaching agents, which can cause skin irritation, redness, and lacerations upon contact. 【0005】 In the case of paper inner liners, their extremely high moisture permeability leads to excessive absorption of moisture and fragrance from the shredded herbs, resulting in problems with maintaining the moisture content and fragrance retention of the herbs. Furthermore, after going through the folding process in a box packaging machine, the deadfold performance, which is the property of maintaining the folded shape, cannot be fully realized. 【0006】 Additionally, in the case of paper-based box packaging, the high moisture permeability of paper makes the packaging prone to getting wet, and the addition of bleach to achieve whiteness has harmful effects on human health and the environment. 【0007】 According to one aspect of the present invention, the objective is to provide a cigarette packaging material that is environmentally friendly due to its high biodegradability and harmless to the human body. 【0008】 Another aspect of the present invention is to provide a cigarette packaging material having physical properties suitable for use as an inner liner or box packaging paper. 【0009】 Another aspect of the present invention is to provide a cigarette packaging material with improved smoothness and excellent printability. 【0010】 Another aspect of the present invention is to provide a cigarette case that includes the aforementioned cigarette packaging material. 【0011】 The objects of the present invention are not limited to those mentioned above, and other objects and advantages of the present invention not mentioned can be understood from the following description and more clearly from the embodiments of the present invention. Furthermore, it is readily apparent that the objects and advantages of the present invention can be achieved by the means and combinations described in the specification. [Means for solving the problem] 【0012】 According to a first aspect of the present invention, a tobacco packaging material comprising polyolefin and calcium carbonate is provided. 【0013】 According to a second aspect of the present invention, in the first aspect, the density of the polyolefin is 0.90 g / cm³. 3 More than 1.00g / cm 3 The following is also acceptable. 【0014】 According to a third aspect of the present invention, in the first or second aspect, the whiteness of the calcium carbonate may be 94% or higher in accordance with ISO 2469. 【0015】 According to a fourth aspect of the present invention, in any one of the first to third aspects, the crystalline form of the calcium carbonate may be precipitated calcium carbonate (PCC) or ground calcium carbonate (GCC). 【0016】 According to the fifth aspect of the present invention, in any one of the first to fourth aspects, the weight ratio of the polyolefin to the calcium carbonate may be 1:9 or more and 3:7 or less. 【0017】 According to the sixth aspect of the present invention, in any one of the first to fifth aspects, the tobacco packaging material further comprises stearic acid, and the polyolefin may comprise recycled polyolefin. 【0018】 According to the seventh aspect of the present invention, in the sixth aspect, the content of stearic acid per 100 parts by weight of the base material composed of the recycled polyolefin and calcium carbonate may be 0.1 parts by weight or more and 2 parts by weight or less. 【0019】 According to the eighth aspect of the present invention, in any one of the first to seventh aspects, the biodegradability of the tobacco packaging material may be 75% or more, in accordance with the ISO 14855-1 test standard. 【0020】 According to the ninth aspect of the present invention, a cigarette case is provided which includes an inner liner and box packaging paper on the inner liner, wherein at least one of the inner liner and the box packaging paper contains cigarette packaging material according to any one of the first to eighth aspects. Specifically, the inner liner and the box packaging paper may contain the cigarette packaging material. 【0021】 According to the tenth aspect of the present invention, in the ninth aspect, the box packaging paper may further include the paper on the cigarette packaging material. 【0022】 According to the eleventh aspect of the present invention, in the tenth aspect, the basis weight of the paper is 150 g / m². 2 More than 250g / m 2 The following is also acceptable. 【0023】 According to the twelfth aspect of the present invention, in any one of the ninth to eleventh aspects, the moisture permeability of the inner liner is 20 g / m² under conditions of 38°C and 100% RH, in accordance with the KS M ISO 15106-2 test standard. 2 • It may be 24 hours or less. Here, the inner liner may include the aforementioned cigarette packaging material. 【0024】 According to the thirteenth aspect of the present invention, in any one of the ninth to twelfth aspects, the box packaging paper includes a first region comprising a first sheet of paper and a first mineral paper on the first sheet; a second region comprising a second sheet of paper and a second mineral paper on the second sheet; and an adhesive layer disposed between the first region and the second region, wherein the adhesive layer is disposed between the first sheet of paper and the second mineral paper, and the first mineral paper and the second mineral paper may comprise the same or different tobacco packaging material. 【0025】 According to the fourteenth aspect of the present invention, in the thirteenth aspect, the adhesive layer may contain an ethylene-vinyl acetate copolymer and a plasticizer. 【0026】 According to the fifteenth aspect of the present invention, in the fourteenth aspect, the content of the plasticizer may be 1 part by weight or more and 10 parts by weight or less per 100 parts by weight of the ethylene-vinyl acetate copolymer. 【0027】 The means of solving the aforementioned problems do not merely enumerate all of the features of the present invention. The diverse features of the present invention and the advantages and effects thereof can be understood in more detail by referring to the specific description below. [Effects of the Invention] 【0028】 According to one aspect of the present invention, it is possible to realize a cigarette packaging material that is environmentally friendly due to its high biodegradability and harmless to the human body. 【0029】 According to another aspect of the present invention, a cigarette packaging material having physical properties suitable for use as an inner liner or box packaging paper can be realized. 【0030】 According to another aspect of the present invention, a cigarette case including the aforementioned cigarette packaging material can be realized. 【0031】 Along with the effects mentioned above, the specific effects of the present invention will be described below, along with a detailed explanation of the specific details for carrying out the invention. Furthermore, the effects of the present invention are not limited to those mentioned above and can be easily achieved by the means and combinations described in the specification. [Brief explanation of the drawing] 【0032】 [Figure 1] Figure 1 shows a cigarette case according to one embodiment of the present invention. [Figure 2] Figure 2 shows a manufacturing facility capable of producing mineral paper contained in tobacco packaging materials according to several embodiments of the present invention. [Figure 3] Figure 3 shows that one side of the box packaging paper according to one embodiment of the present invention has been peeled off. [Figure 4] Figure 4 is a cross-sectional view obtained by cutting along line A-A' in Figure 3. [Figure 5] Figure 5 is a graph showing the change in moisture content of the shredded grass in the inner liner according to Example 1-1 and Comparative Example 1. [Figure 6] Figure 6 is a graph showing the change in moisture content of the inner liner in Example 1-1 and Comparative Example 1 over time when relative humidity conditions are changed. [Modes for carrying out the invention] 【0033】 In this specification, singular expressions include plural expressions unless otherwise clearly stated. 【0034】 Where multiple embodiments are described herein, unless otherwise stated, each embodiment can be combined with others. The effects of the present invention can be defined to include not only the effects arising from each embodiment itself, but also the effects that arise from the organic combination of each embodiment. For example, even if Embodiments 1 and 2 are described independently herein, unless otherwise clearly stated in the text, the effects that arise from the organic combination of Embodiments 1 and 2 may also be included in the effects of the present invention. 【0035】 In this specification, the term "connection" is a concept that includes not only the direct connection of one component but also the indirect connection of components through the interposition of other components. 【0036】 In this specification, the range of numbers indicated using the term "or" refers to a range of numbers that includes the values ​​listed before and after the term as the lower and upper limits, respectively. For example, if a to b are listed in the specification, it can be understood that the range is a to b (a to b). 【0037】 Where multiple numerical values ​​are disclosed in this specification as upper and lower limits for any given numerical range, the numerical range disclosed in this specification can be understood as any numerical range with any one of the multiple lower limits and any one of the multiple upper limits as the lower and upper limits, respectively. For example, where "a or greater" or "b or greater" and "c or less" or "d or less" are stated, it can be understood as "a or greater and c or less", "a or greater and d or less", "b or greater and c or less", or "b or greater and d or less". 【0038】 In this specification, “Layer” or “film” may include cases where, when observing the region in which the layer or film exists, it is formed not only over the entire region but also on only a portion of the region. For example, the surface of the layer or film may be defined as flat, non-flat, or a combination thereof; or continuous, discontinuous, or a combination thereof. For example, when one member is directly on another member, the coverage of the other member over the surface of the first member may be defined as 1% or more, 5% or more, 10% or more, 20% or more, 30% or more, 40% or more, 50% or more, 60% or more, 70% or more, 80% or more, 85% or more, 90% or more, 95% or more, or 99% or more. 【0039】 In this specification, the terms “about” or “substantially” mean a reasonable amount of deviation of a term modified so as not to significantly alter the final result. This term can be interpreted as including deviations of at least ±5% or at least ±10%, to the extent that the deviation does not alter the meaning of the word and render it invalid. 【0040】 In this specification, the average particle size is defined as the particle size D at which the cumulative percentage on the volume-based particle size distribution curve reaches 50%, when measured by a laser diffraction particle size distribution analyzer. 50 It can be defined as follows. 【0041】 In this specification, "weight-average molecular weight" or "water-average molecular weight" can be analyzed by GPC (Gel permeation chromatography) as molecular weight equivalent to standard polystyrene. For example, the GPC analysis can be performed using tetrahydrofuran (THF) as the developing solvent, under analytical conditions of a sample concentration of 5 mg / mL, a sample injection volume of 100 μl, a column temperature of 40°C, and a flow rate of 1 mL / min. 【0042】 In this specification, "containing at least one of a, b, and c" means containing a, b, or c individually, or two or more combinations selected from the group consisting of a, b, and c. 【0043】 In this specification, “tobacco packaging material” can be defined as a configuration capable of packaging or wrapping tobacco. Here, “packaging” can include not only functions that maintain the shape and arrangement of tobacco by being in contact with or connected to the tobacco, but also functions that maintain the shape and arrangement of tobacco without direct contact with the tobacco. For example, the tobacco may be any smoking article that can provide any smokeable product or smoking experience, and may include cigarettes, cigars, and cigarillos. 【0044】 According to one aspect of the present invention, a cigarette packaging material comprising polyolefin and calcium carbonate is provided. 【0045】 Conventional paper inner liners have the problem of excessively absorbing moisture and aroma from the tobacco over long periods due to their very high moisture permeability, making it difficult to maintain the moisture content and aroma retention of the tobacco. Furthermore, they do not exhibit sufficient dead-fold performance, which is the property of maintaining the folded shape after being folded in a box packaging machine. On the other hand, paper box packaging paper has the problem of being easily wet due to the high moisture permeability of paper, and the addition of bleach to achieve whiteness has the problem of having harmful effects on the human body. According to one aspect of the present invention, by satisfying the organic combination relationship between polyolefin and calcium carbonate, it is possible to realize a tobacco packaging material that is easy to recycle, conserves forest resources, and has a high degree of biodegradability. According to another aspect of the present invention, by eliminating the use of bleach to achieve whiteness in the packaging material, it is possible to realize a tobacco packaging material that is harmless to the human body. According to yet another aspect of the present invention, by satisfying the aforementioned organic combination relationship, it is possible to realize physical properties suitable for inner liners or box packaging paper. 【0046】 The configuration of the present invention will be described in more detail below. 【0047】 1. Packaging materials for cigarettes 【0048】 Polyolefins 【0049】 The polyolefin according to the present invention can act as a binder that binds or links calcium carbonates together. 【0050】 In some embodiments of the present invention, the polyolefin may include polyethylene, specifically having a density of 0.90 g / cm³. 3 More than 1.00g / cm 3 The following polyethylenes may be included. According to some embodiments of the present invention, the inclusion of the polyethylene makes it possible to exhibit mechanical properties such as tensile strength suitable for cigarette inner liners. 【0051】 Specifically, the density of the polyolefin is 0.90 g / cm 3 or more, 0.91 g / cm 3 or more, 0.92 g / cm 3 or more, 0.93 g / cm 3 or more, or 0.94 g / cm 3 or more; and 0.97 g / cm 3 or less, 0.98 g / cm 3 or less, 0.99 g / cm 3 or less, or 1.00 g / cm 3 or less may be acceptable. According to some embodiments of the present invention, by adjusting the density of the polyolefin within the above numerical range, the chemical resistance of the tobacco packaging material can be realized against various external conditions, and mechanical properties such as tensile strength suitable for the tobacco packaging material can be realized. For example, the density of the polyolefin can be measured in accordance with JIS K7112. 【0052】 In some embodiments of the present invention, based on the total weight of the polyolefin, the content of the polyethylene may be 90% by weight or more, 91% by weight or more, 92% by weight or more, 93% by weight or more, 94% by weight or more, 95% by weight or more, 96% by weight or more, 97% by weight or more, 98% by weight or more, 99% by weight or more, or 100% by weight. According to some embodiments of the present invention, by adjusting the content of the polyethylene within the above numerical range based on the total weight of the polyolefin, the role of the binder for binding calcium carbonate to each other can be more effectively exerted, the processability of the polyolefin can be further improved, and better miscibility with calcium carbonate can be realized. 【0053】 In some embodiments of the present invention, the weight-average molecular weight of the polyolefin may be 200,000 g / mol or more, 250,000 g / mol or more, or 260,000 g / mol or more; and 460,000 g / mol or less, 480,000 g / mol or less, or 500,000 g / mol or less. According to some embodiments of the present invention, by adjusting the weight-average molecular weight of the polyolefin to the above numerical range, chemical resistance to various external conditions of cigarette packaging material can be achieved, and mechanical properties such as tensile strength suitable for cigarette packaging material can be achieved. 【0054】 In several other embodiments of the present invention, the polyolefin may include recycled polyolefin. According to some embodiments of the present invention, by using recycled polyolefin produced using waste polyolefin as a binder, the content of discarded polyolefin can be reduced, resulting in an environmentally friendly cigarette packaging material. 【0055】 The recycled polyolefin according to the present invention may include a polyolefin resin obtained by recycling discarded polyolefin material. For example, the recycled polyolefin may be produced by putting pelletized waste polyolefin into a kneader and then going through kneading and heating steps. 【0056】 In some examples, the method for producing the recycled polyolefin is not particularly limited and may involve putting waste polyolefin into a kneader, followed by kneading and heating steps. Specifically, the method for producing the recycled polyolefin may include the steps of putting waste polyolefin into a kneader; and producing the recycled polyolefin by adjusting the temperature of the kneader to 150 to 200°C, the mixing speed of the kneader to 30 to 60 RPM, and the kneading time to 5 to 20 minutes. 【0057】 In some embodiments of the present invention, the recycled polyolefin may include recycled polyethylene, specifically having a density of 0.90 to 1.00 g / cm³. 3This may include recycled polyethylene. According to some embodiments of the present invention, the inclusion of recycled polyethylene in the recycled polyolefin can further promote the effect of decomposition of the recycled polyethylene by geothermal heat when the cigarette packaging material is buried in the ground, and can also exhibit mechanical properties suitable for inner liners or box packaging paper. 【0058】 Specifically, the density of the recycled polyethylene is 0.91 to 1.00 g / cm³. 3 0.92 to 0.99 g / cm³ 3 0.93 to 0.98 g / cm³ 3 , or 0.94 to 0.97 g / cm³ 3 This may also be the case. According to some embodiments of the present invention, by satisfying the numerical range of the density of the recycled polyethylene, chemical resistance of the cigarette packaging material to various external conditions can be achieved, and mechanical properties such as tensile strength suitable for box packaging paper or inner liner can be achieved. For example, the density of the recycled polyethylene can be measured in accordance with JIS K7112. 【0059】 In some embodiments of the present invention, the content of recycled polyethylene, based on the total weight of the recycled polyolefin, may be 90% by weight or more, 91% by weight or more, 92% by weight or more, 93% by weight or more, 94% by weight or more, 95% by weight or more, 96% by weight or more, 97% by weight or more, 98% by weight or more, 99% by weight or more, or 100% by weight. According to some embodiments of the present invention, by satisfying the above numerical range for the content of recycled polyethylene, based on the total weight of the recycled polyolefin, the binder role that binds calcium carbonates together is better expressed, the processability of the recycled polyolefin is further improved, and better miscibility with calcium carbonate can be achieved. 【0060】 In yet another embodiment of the present invention, the recycled polyolefin may further include one or more selected from the group consisting of recycled polypropylene, non-renewable polyethylene, and non-renewable polypropylene, in addition to the recycled polyolefin. Here, "non-renewable polyethylene" and "non-renewable polypropylene" refer to general polyethylene or polypropylene that is commonly used in the art and does not use waste polyolefin as a raw material, and can be distinguished from recycled polyethylene or recycled polypropylene. Specifically, the content of one or more selected from the group consisting of recycled polypropylene, non-renewable polyethylene, and non-renewable polypropylene may be 10% by weight or less, 9% by weight or less, 8% by weight or less, 7% by weight or less, 6% by weight or less, 5% by weight or less, 4% by weight or less, 3% by weight or less, 2% by weight or less, 1% by weight or less, or 0.5% by weight or less, based on the total weight of the recycled polyolefin. According to some embodiments of the present invention, by satisfying the numerical range in which the content of one or more selected from the group consisting of recycled polypropylene, non-recycled polyethylene, and non-recycled polypropylene satisfies the above numerical range, the binder role that binds calcium carbonate together is better expressed, the processability of the recycled polyolefin is further improved, and better miscibility with calcium carbonate can be achieved. 【0061】 In some embodiments of the present invention, the weight-average molecular weight of the recycled polyolefin may be 200,000 to 500,000 g / mol, 250,000 to 480,000 g / mol, or 260,000 to 460,000 g / mol. According to some embodiments of the present invention, by satisfying the above numerical range for the weight-average molecular weight of the recycled polyolefin, chemical resistance to various external conditions of the cigarette packaging material can be achieved, and mechanical properties such as tensile strength suitable for box packaging paper or inner liner can be achieved. 【0062】 calcium carbonate 【0063】 The calcium carbonate according to the present invention reinforces the mechanical properties of cigarette packaging materials and is an environmentally friendly material that decomposes in the soil even when buried. Furthermore, when the calcium carbonate according to the present invention is included in cigarette packaging materials, its inherent whiteness eliminates the need to add bleach to the packaging materials. This makes it possible to create cigarette packaging materials that are harmless to the human body, especially considering applications where cigarette packaging materials come into frequent contact with skin, such as the hands. 【0064】 In some embodiments of the present invention, the whiteness of the calcium carbonate may be 94% or higher, 95% or higher, 96% or higher, 96% to 98%, or 96% to 97%. Specifically, when the whiteness of the calcium carbonate satisfies the above numerical range, a cigarette packaging material that is harmless to the human body and has high whiteness and opacity without the use of bleach can be realized. For example, the whiteness of the calcium carbonate can be measured in accordance with ISO 2469 using a whiteness measuring device (Elrepho 3300 instrumentation). 【0065】 In some embodiments of the present invention, the crystalline form of the calcium carbonate may be precipitated calcium carbonate (PCC) or ground calcium carbonate (GCC), and specifically, it may be precipitated calcium carbonate. According to some embodiments of the present invention, when the crystalline form of the calcium carbonate is precipitated calcium carbonate, it has the characteristics of having a lower impurity content, higher whiteness, and the ability to control uniform particle size compared to other crystalline forms, making it possible to realize a highly white cigarette packaging material without the use of bleach. For example, the crystalline form of the calcium carbonate can be analyzed using powder XRD (X-ray diffraction), and specifically, it can be analyzed using an XRD device (Scintag X'TRA). For example, the XRD analysis conditions may be, in the case of X-rays, Cu-tube, in the case of 2θ, 2 to 40°, in the case of scan mode, continuous scan mode, and in the case of scan speed, 0.25 to 5° / min. 【0066】 For example, the crystalline form of the calcium carbonate may vary depending on the method of producing the calcium carbonate. In some examples, the precipitated calcium carbonate can be synthesized through a calcination process that converts limestone into quicklime (CaO), a hydration process that reacts the quicklime with water to synthesize slaked lime (Ca(OH)2), and a carbonization process that reacts the slaked lime with carbon dioxide to produce precipitated calcium carbonate. In some examples, the pulverized calcium carbonate is calcium carbonate obtained from a natural source, such as limestone, marble, or chalk, and may be produced through processes such as pulverization, screening, and / or dry and / or wet pulverization, for example, using a cyclone, classifier, or centrifuge. 【0067】 In some embodiments of the present invention, the BET (Brunauer, Emmett, Teller) specific surface area of ​​the calcium carbonate is 0.80 m². 2 / g or more, 0.85m 2 / g or more, 0.89m 2 / g or more, 1m 2 / g or more, 2m 2 / g or more, 3m 2 / g or more, 4m 2 / g or more, 1 to 25m 2 / g, 2 to 24m 2 / g, 3 to 23m 2 / g, or 4 to 22m 2It may also be / g. The BET specific surface area of ​​calcium carbonate is the value obtained by dividing the surface area of ​​calcium carbonate by its mass, and can affect both the moisture permeability and mechanical properties of the tobacco packaging material. According to some embodiments of the present invention, when the BET specific surface area of ​​the calcium carbonate satisfies the above numerical range, when the tobacco packaging material is applied to an inner liner, the moisture permeability can be significantly reduced, maintaining the moisture content and aroma retention of the tobacco, and when the tobacco packaging material is applied to box wrapping paper, sufficient stiffness can be achieved. For example, the BET specific surface area of ​​the calcium carbonate can be measured in accordance with ISO 9277:1995. 【0068】 In some embodiments of the present invention, the average particle size D of the calcium carbonate 50 The average particle size D of the calcium carbonate is 1 μm or more, 2 μm or more, or 2.5 μm or more; and may be 3 μm or less, 4 μm or less, 5 μm or less, 6 μm or less, 7 μm or less, 8 μm or less, 9 μm or less, or 10 μm or less, specifically 1 to 10 μm, 2 to 9 μm, 2 to 8 μm, 2 to 7 μm, 2 to 6 μm, or 2.5 to 6 μm. According to some embodiments of the present invention, the average particle size D of the calcium carbonate is 1 μm or more, 2 μm or more, or 2.5 μm or more; and may be 3 μm or less, 4 μm or less, 5 μm or less, 6 μm or less, 7 μm or less, 8 μm or less, 9 μm or less, or 10 μm or less, and specifically may be 1 to 10 μm, 2 to 9 μm, 2 to 8 μm, 2 to 7 μm, 2 to 6 μm, or 2.5 to 6 μm. 50 When the above numerical range is satisfied, the dispersibility of the calcium carbonate mixed with the polyolefin resin is further improved, making it easy to adjust the mechanical and optical properties of the cigarette packaging material. For example, the average particle size of the calcium carbonate can be calculated by dispersing the target particles in a dispersion medium, then introducing them into a commercially available laser diffraction particle size analyzer (e.g., Microtrac S3500) and measuring the difference in diffraction patterns due to particle size as the particles pass through the laser beam to calculate the particle size distribution. 【0069】 Stearic acid 【0070】 In some embodiments of the present invention, the tobacco packaging material may further contain stearic acid. Specifically, since stearic acid has a carboxyl group, which is a new aqueous action group, it can impart new aqueous properties to the surface of the polyolefin or the recycled polyolefin. This can help various microorganisms in the soil to adhere to the surface of the polyolefin. 【0071】 The stearic acid according to the present invention can further enhance the biodegradability of the polyolefin or recycled polyolefin, thereby realizing an environmentally friendly cigarette packaging material. Generally, if cigarette packaging materials do not contain stearic acid, there is a possibility that the biodegradability of cigarette packaging materials buried in landfills will decrease even when exposed to geothermal heat. 【0072】 Relationships between constituent elements 【0073】 In some embodiments of the present invention, the weight ratio of the polyolefin to the calcium carbonate (polyolefin:calcium carbonate) may be 1:9 or more and 3:7 or less, specifically 1.5:8.5 or more and 3:7 or less, and more specifically 1.5:8.5 or more and 2:8 or less. According to some embodiments of the present invention, by adjusting the weight ratio of the polyolefin to the calcium carbonate to the above numerical range, excellent mechanical properties such as tensile strength and stiffness of the cigarette packaging material are exhibited, and the effect of linking or binding the calcium carbonate particles together is improved, thereby effectively preventing the detachment of the calcium carbonate particles. 【0074】 In some embodiments of the present invention, the weight ratio of the recycled polyolefin to the calcium carbonate (recycled polyolefin:calcium carbonate) may be 1:9 to 3:7, more specifically 1.5:8.5 to 3:7, and more specifically 1.5:8.5 to 2:8. According to some embodiments of the present invention, when the weight ratio of the recycled polyolefin to the calcium carbonate satisfies the above numerical range, excellent mechanical properties such as tensile strength and stiffness of the cigarette packaging material are exhibited, and the effect of linking or binding the calcium carbonate particles together is improved, thereby effectively preventing the detachment of the calcium carbonate particles. 【0075】 In some embodiments of the present invention, the stearic acid content per 100 parts by weight of the base material composed of the recycled polyolefin and the calcium carbonate may be 0.1 parts by weight or more, 0.2 parts by weight or more, 0.3 parts by weight or more, 0.4 parts by weight or more, or 0.5 parts by weight or more; and 0.6 parts by weight or less, 0.7 parts by weight or less, 0.8 parts by weight or less, 0.9 parts by weight or less, 1 part by weight or less, or 2 parts by weight or less, specifically 0.1 to 2 parts by weight, 0.1 to 1 part by weight, 0.1 to 0.9 parts by weight, 0.2 to 0.8 parts by weight, 0.3 to 0.7 parts by weight, 0.4 to 0.6 parts by weight, or 0.5 to 0.6 parts by weight. According to some embodiments of the present invention, when the stearic acid content satisfies the above numerical range, the mechanical properties of the tobacco packaging material are fully expressed, and the biodegradation of the recycled polyolefin can be further promoted. 【0076】 Physical properties of the inner liner 【0077】 In some embodiments of the present invention, the biodegradability of the tobacco packaging material may be 75% or more, 76% or more, 77% or more, or 78% or more, in accordance with the ISO 14855-1 test standard. For example, the biodegradability of the tobacco packaging material can be analyzed in accordance with the ISO 14855-1 test standard. 【0078】 When the tobacco packaging material of some embodiments of the present invention includes an inner liner, the thickness of the inner liner is 50 μm or more, 60 μm or more, 70 μm or more, 80 μm or more, or 90 μm or more; and 95 μm or less, 100 μm or less, 105 μm or less, 110 μm or less, 120 μm or less, 130 μm or less, 140 μm or less, 150 μm or less, 160 μm or less, 170 μm or less, 180 μm or less The thickness may be less than or equal to μm, less than or equal to 190 μm, or less than or equal to 200 μm, and specifically, it may be 50 to 200 μm, 60 to 190 μm, 70 to 180 μm, 80 to 170 μm, 90 to 160 μm, 90 to 150 μm, 90 to 140 μm, 90 to 130 μm, 90 to 120 μm, 90 to 110 μm, 90 to 100 μm, or 90 to 95 μm. According to some embodiments of the present invention, when the thickness of the cigarette packaging material satisfies the above numerical range, the tensile strength of the inner liner can be achieved at an appropriate level, and the moisture permeability can be reduced to an appropriate level. For example, the thickness of the inner liner can be measured in accordance with KS M ISO 534. 【0079】 When the tobacco packaging material of some embodiments of the present invention is included in an inner liner, the basis weight of the tobacco packaging material is 50 g / m². 2 More than 60g / m 2 More than 70g / m 2 More than 80g / m 2 More than 90g / m 2 More than 95g / m 2 Above, 98g / m 2 99g / m² or more 2 Above; and 110 g / m² 2 Below 120g / m 2 Below 130g / m 2 Below 140g / m 2 Below 150g / m 2 Below 160g / m 2 Below 170g / m 2 Below 180g / m 2 Below 190g / m 2 or less, or 200g / m² 2The following are also acceptable, specifically 50 to 200 g / m². 2 60 to 190 g / m² 2 70 to 180 g / m² 2 80 to 170 g / m² 2 90 to 160 g / m² 2 90 to 150 g / m² 2 95 to 140 g / m² 2 95 to 130 g / m² 2 98 to 120 g / m² 2 , or 99 to 110 g / m² 2 This may also be the case. According to some embodiments of the present invention, when the basis weight of the cigarette packaging material satisfies the above numerical range, the tensile strength of the cigarette packaging material can be achieved at an appropriate level, and the moisture permeability can be reduced to an appropriate level. For example, the basis weight of the inner liner can be measured in accordance with KS M ISO 536. 【0080】 In some examples, when the tobacco packaging material is included in an inner liner, the tensile strength of the tobacco packaging material is MD(Machine With respect to the direction, the pressure may be 3.0 kgf / 15 mm or more, 5 kgf / 15 mm or more, 6 kgf / 15 mm or more, 7 kgf / 15 mm or more, 10 kgf / 15 mm or more, or 11 kgf / 15 mm or more; and it may also be 13 kgf / 15 mm or less, 14 kgf / 15 mm or less, 15 kgf / 15 mm or less, 17 kgf / 15 mm or less, 18 kgf / 15 mm or less, 19 kgf / 15 mm or less, or 20 kgf / 15 mm or less. Specifically, it may be 3.0 to 20.0 kgf / 15 mm, 5 to 19 kgf / 15 mm, 6 to 18 kgf / 15 mm, 7 to 17 kgf / 15 mm, 10 to 15 kgf / 15 mm, or 11 to 14 kgf / 15 mm, or 12 to 13 kgf / 15 mm. For example, the tensile strength of the aforementioned cigarette packaging material can be measured in accordance with KS M ISO 1924-2. 【0081】 In some examples, when the cigarette packaging material is included in an inner liner, the whiteness of the cigarette packaging material may be 80% or more, 81% or more, 82% or more, 83% or more, 84% or more, 85% or more, 86% or more, 87% or more, 88% or more, 89% or more, 80 to 95%, 81 to 94%, 82 to 93%, 83 to 92%, 84 to 92%, 85 to 92%, 86 to 92%, 87 to 92%, 88 to 92%, or 89 to 92%. Specifically, even without containing bleach in the cigarette packaging material, achieving a whiteness within the above numerical range makes it possible to create cigarette packaging material that is harmless to the human body and environmentally friendly. For example, the whiteness of the cigarette packaging material can be measured in accordance with KS M ISO 2470. Here, the bleaching agent is not particularly limited and may be a common bleaching agent commonly used in the paper technology field. Specifically, it may include a chlorine-based bleaching agent, and more specifically, it may include chlorine dioxide. Some embodiments of the present invention of cigarette packaging materials do not contain bleaching agents, thereby achieving the effect of not generating chlorine gas, which is harmful to the human body, that is produced during bleaching. 【0082】 In some examples, when the cigarette packaging material includes an inner liner, the opacity of the inner liner may be 80% or more, 81% or more, 82% or more, 83% or more, 84% or more, 85% or more, 86% or more, 87% or more, 88% or more, 89% or more, 90% or more, 91% or more, 80 to 95%, 81 to 94%, 82 to 93%, 83 to 92%, 84 to 92%, 85 to 92%, 86 to 92%, 87 to 92%, 88 to 92%, 89 to 92%, 90 to 92%, or 91 to 92%. For example, the opacity of the inner liner can be measured in accordance with KS M ISO 2471. According to some embodiments of the present invention, when the opacity of the inner liner satisfies the above numerical range, the show-through phenomenon of the printed image can be effectively prevented during printing. 【0083】 In some examples, when the tobacco packaging material is included in the inner liner, the moisture permeability of the inner liner is 20 g / m² at 38°C and 100% RH conditions. 2 ·24hr or less, 19g / m 2 ·24hr or less, 18g / m 2 ·24hr or less, 17g / m 2 ·24hr or less, 16g / m 2 ·24hr or less, 15g / m 2 ·24hr or less, 14g / m 2 ·24hr or less, 13g / m 2 • Less than 24 hours, or 12 g / m² 2 • It may be less than 24 hours, specifically, 0 or less than the above multiple upper limits (g / m³) 2 It may be any one of the following (24hr) or less. For example, the moisture permeability of the inner liner can be measured in accordance with KS M ISO 15106-2. According to some embodiments of the present invention, when the moisture permeability of the tobacco packaging material satisfies the above numerical range, an even better effect in maintaining the moisture and aroma retention of the tobacco is achieved, further improving the marketability of the tobacco. 【0084】 Physical properties of box wrapping paper 【0085】 In some embodiments of the present invention, when the tobacco packaging material is included in a box packaging paper, the thickness of the tobacco packaging material may be 100 to 400 μm, 150 to 390 μm, 160 to 380 μm, 200 to 380 μm, or 240 to 370 μm. According to some embodiments of the present invention, when the thickness of the box packaging paper satisfies the above numerical range, the stiffness of the box packaging paper is increased and the moisture permeability can be reduced to an appropriate level. For example, the thickness of the box packaging paper can be measured in accordance with KS M ISO 534. 【0086】 In some embodiments of the present invention, when the tobacco packaging material is included in the box packaging paper, the basis weight of the tobacco packaging material is 200 to 400 g / m². 2 210 to 390 g / m² 2220 to 380 g / m² 2 230 to 370 g / m² 2 240 to 360 g / m² 2 250 to 350 g / m² 2 260 to 350 g / m² 2 270 to 350 g / m² 2 , or 280 to 350 g / m² 2 This may also be the case. According to some embodiments of the present invention, when the basis weight of the tobacco packaging material satisfies the above numerical range, the stiffness of the box packaging paper can be achieved at an appropriate level, and the moisture permeability can be reduced to an appropriate level. 【0087】 In some embodiments of the present invention, when the cigarette packaging material is included in box packaging paper, the whiteness of the cigarette packaging material may be 80% or more, 81% or more, 82% or more, 83% or more, 84% or more, specifically, any one of the above lower limit values ​​(%) or more and 95% or less. Specifically, even without containing a bleaching agent in the cigarette packaging material, achieving a whiteness within the above numerical range makes it possible to realize a cigarette packaging material that is harmless to the human body and environmentally friendly. For example, the whiteness of the cigarette packaging material can be measured in accordance with KS M ISO 2470. Here, the bleaching agent may be the same as or different from the bleaching agent described above. 【0088】 In some embodiments of the present invention, when the cigarette packaging material is included in the box packaging paper, the opacity of the cigarette packaging material may be 90% or more, 91% or more, 92% or more, 93% or more, 94% or more, or 95% to 100%. For example, the opacity of the cigarette box packaging paper can be measured in accordance with KS M ISO 2471. According to some embodiments of the present invention, when the opacity of the cigarette packaging material satisfies the above numerical range, the show-through phenomenon of the printed image can be effectively prevented during printing. 【0089】 According to one embodiment of the present invention, it is possible to provide a box wrapping paper composed of a tobacco packaging material in some embodiments. At this time, the tobacco packaging material is not laminated with paper and may be composed of the aforementioned tobacco packaging material. In some examples, the stiffness of the tobacco packaging material may be independently 10 to 30 gf / cm, 10 to 25 gf / cm, 15 to 20 gf / cm or 17 to 19 gf / cm with respect to the MD direction (Machine direction) and the CD (Cross direction) direction. For example, the stiffness of the tobacco packaging material can be measured in accordance with KS M ISO 2493. 【0090】 According to another embodiment of the present invention, it is possible to provide a box wrapping paper including a base material; and paper on the base material. At this time, the tobacco packaging material of some of the above-described embodiments may be included on the base material. Specifically, by configuring the paper in a state laminated with the base material, the stiffness of the box wrapping paper is increased, and at the same time, a moisture barrier effect that is difficult to achieve with paper and a waterproof box wrapping paper function that is not wetted by water can be achieved. 【0091】 According to some embodiments of the present invention, by including several mineral papers on the base material, the described smoothness can be improved and the printing ease can be further improved. 【0092】 In some embodiments of the present invention, the basis weight of the paper is 150 g / m 2 or more, 160 g / m 2 or more, 170 g / m 2 or more, 180 g / m 2 or more, or 190 g / m 2 or more; and 200 g / m 2 or less, 210 g / m 2 or less, 220 g / m 2 or less, 230 g / m 2 or less, 240 g / m 2 or less or​​​, 160 to 240 g / m 2 , 170 to 230 g / m 2 , 180 to 220 g / m 2 , 190 to 210 g / m 2 , or 190 to 200 g / m 2 may also be used. According to some embodiments of the present invention, when the basis weight of the paper satisfies the numerical range, the stiffness of the cigarette box wrapping paper can be adjusted to an appropriate level to facilitate the transfer process, and the adhesion performance between one box wrapping paper area can be fully achieved. 【0093】 In some embodiments of the present invention, the box wrapping paper may further include a printed layer with a pattern or pattern engraved on one surface of the base material. Specifically, the base material may be interposed between the printed layer and the paper. For example, the printed layer is not particularly limited and can be manufactured by a printing method commonly used in the art. Specifically, the printed layer can be realized by a gravure printing or offset printing method, and more specifically, by an offset printing method. According to some examples, when using the offset printing method compared to other printing methods, the effect of accurately applying ink to a desired position during the printing process can be achieved. 【0094】 In some examples, based on a thickness of 365 μm for the cigarette box packaging paper, the stiffness of the cigarette packaging material may be 150 to 250 gf / cm in the MD direction and 100 to 200 gf / cm in the CD (Cross direction) direction. In this case, the cigarette box packaging paper may be mineral paper laminated with paper. Specifically, the stiffness of the cigarette packaging material may be 160 to 240 gf / cm, 170 to 230 gf / cm, 180 to 220 gf / cm, 190 to 210 gf / cm, or 190 to 200 gf / cm in the MD direction, and 110 to 190 gf / cm, 120 to 180 gf / cm, 130 to 170 gf / cm, 140 to 160 gf / cm, or 140 to 150 gf / cm in the CD direction. For example, the stiffness of the cigarette packaging material can be measured in accordance with KS M ISO 2493. According to some embodiments of the present invention, by satisfying the numerical range for the stiffness of the cigarette packaging material, deformation of the box packaging paper from various external forces is minimized, thereby enabling superior cigarette packaging functionality. 【0095】 In some embodiments of the present invention, when the tobacco packaging material is included in the box packaging paper, the tobacco packaging material is 15 g / m² under conditions of 38°C and 100% RH. 2 ·24hr or less, 14g / m 2 ·24hr or less, 13g / m 2 • Less than 24 hours, or 12 g / m² 2 It may be 24hr or less, specifically, 0 or more and any one of the above multiple upper limits (g / m³ 2 It may be less than 24 hours. For example, the moisture permeability of the cigarette packaging material in the box packaging paper can be measured in accordance with KS M ISO 15106-2. 【0096】 2. Cigarette case 【0097】 According to another aspect of the present invention, a cigarette case is provided comprising an inner liner and box packaging paper on the inner liner, wherein at least one of the inner liner and the box packaging paper comprises a cigarette packaging material of several embodiments. 【0098】 Figure 1 shows a cigarette case according to one embodiment of the present invention. 【0099】 Referring to Figure 1, the cigarette case 100 according to the present invention is a structure for packaging the entire cigarette and may include an inner liner 10 and box packaging paper 20. 【0100】 The inner liner 10 according to the present invention not only serves the function of packaging multiple cigarettes, but can also improve the persistence of moisture in the shredded tobacco and the aroma of the tobacco. 【0101】 In some examples, the inner liner 10 may be placed inside the box packaging paper 20 which corresponds to the housing of the cigarette case. In this case, the inner liner 10 may or may not be in contact with the box packaging paper 20. 【0102】 The box packaging paper 20 according to the present invention can serve as the body or housing of the cigarette case 100 and can form the outer shape of the cigarette case. The box packaging paper 20 according to the present invention may be placed on the inner liner 10. 【0103】 If necessary, the cigarette case 100 according to the present invention may further include a metal foil 30 to effectively prevent the release of tobacco odor. Furthermore, the metal foil 30 according to the present invention may have the characteristic of maintaining its luster and not discoloring or oxidizing for a long time even at very high temperatures. 【0104】 In some examples, the metal foil 30 may include aluminum foil. The aluminum foil is inexpensive among thin metal foils and can also exhibit the property of maintaining excellent gloss. 【0105】 In some embodiments of the present invention, the inner liner 10 and the box packaging paper 20 may include the cigarette packaging materials of some embodiments. Specifically, by including any of the aforementioned cigarette packaging materials of some embodiments in the inner liner and the box packaging paper, it is possible to further improve the moisture-permeable barrier effect and the waterproof effect that prevents water from getting in, which were difficult to achieve with paper packaging materials. 【0106】 In this specification, "mineral paper" is defined as a material containing the aforementioned polyolefin and the aforementioned calcium carbonate. 【0107】 Figure 2 shows a manufacturing facility capable of producing mineral paper contained in tobacco packaging materials according to several embodiments of the present invention. 【0108】 Referring to Figure 2, the mineral paper manufacturing equipment 200 according to the present invention may include an extruder 110, a mold inlet 120, a cooling means 130, a tube 140, a folding means 155, a first roll 160, a cutting means 170, and a second roll 180. 【0109】 In some embodiments of the present invention, the extruder 110 may be a device that kneads and melts both polyolefin and calcium carbonate to produce a molten product. 【0110】 In some other embodiments of the present invention, the extruder 110 may be a device that kneads and melts recycled polyolefin, calcium carbonate, and stearic acid to produce a molten product. 【0111】 In some examples, the extruder 110 is not particularly limited and may specifically include twin-screw extruders. For example, the rotational speed of the screws may be 70 to 100 RPM, and the diameter of the screws may be 100 to 150 mm. 【0112】 The mold inlet 120 according to the present invention may be a device for molding the molten material melted by the extruder 110. After the molten material is molded to correspond to the shape of the mold, it may be cooled by a cooling means 130, which will be described later, to produce a spare sheet. Specifically, the mold inlet 120 may be connected to the extruder 110, or more specifically, directly connected to it. 【0113】 The cooling means 130 according to the present invention can manufacture a molded body by freezing the molten material using cold air. For example, the temperature of the air may be 60 to 90°C or 70 to 80°C. Specifically, the cooling means 130 may be connected to the mold inlet 120, or more specifically, directly connected to it. 【0114】 The tube 140 according to the present invention may represent a portion or region in which a spare sheet is manufactured. Specifically, the spare sheet that has passed through the tube 140 may be stretched in the length and width directions under predetermined temperature conditions for a predetermined time by a first roll 160, which will be described later. This allows for adjustment of the mechanical properties and thickness of the mineral paper. Specifically, the tube 140 may be connected to the cooling means 130. 【0115】 The folding means 155 according to the present invention may be a device for folding the spare sheet symmetrically. For example, the spare sheet may be in a state where it is folded in half by the folding means 155. 【0116】 The first roll 160 according to the present invention can take and lift the spare sheet so that the spare sheet can be stretched. In Figure 2, the number of first rolls is shown as two, but the number of first rolls can be varied in various ways. 【0117】 The cutting means 170 according to the present invention can perform the role of cutting the folded spare sheet. For example, by cutting the folded spare sheet with the cutting means 170, each cut spare sheet can be transferred to the second roll 180, which will be described later. 【0118】 The second roll 180 according to the present invention may be a device for transporting the cut spare sheet to obtain mineral paper. Specifically, the second roll 180 may be connected to the cutting means 170, or more specifically, directly connected. 【0119】 Figure 3 shows that one side of the box packaging paper according to one embodiment of the present invention has been peeled off. For example, the one side of the box packaging paper may be a side of the box packaging paper. 【0120】 Figure 4 is a cross-sectional view obtained by cutting along line A-A' in Figure 3. 【0121】 Referring to Figures 3 and 4, some embodiments of the present invention of box packaging paper 20 may include a first region R1, a second region R2, and an adhesive layer 25 disposed between the first and second regions R1 and R2. 【0122】 In this specification, the first mineral paper 21m and the second mineral paper 22m can each independently include several embodiments of tobacco packaging materials that are identical or different from each other. For example, the first mineral paper 21m may contain polyolefin and calcium carbonate, and the second mineral paper 22m may contain polyolefin and calcium carbonate. For example, at least one of the densities and molecular weights of the polyolefin contained in each of the mineral papers may be identical or different from each other, and at least one of the crystalline form, whiteness, BET specific surface area, and average particle size of the calcium carbonate may be identical or different from each other. 【0123】 In some embodiments of the present invention, the first region R1 may include a first sheet 21p and a first mineral paper 21m placed on the first sheet 21p. Specifically, the first mineral paper 21m may be placed directly on the first sheet 21p. For example, the upper surface of the first mineral paper 21m may be the exposed surface of the box packaging paper 20, and a printed layer (not shown) may be placed on the upper surface of the first mineral paper 21m as needed. 【0124】 In some embodiments of the present invention, the first paper 21p may be connected to the second mineral paper 22m, described later, via an adhesive layer 25. If a general adhesive is used to connect the first mineral paper 21m and the second mineral paper 22m without the presence of the first paper 21p, there is a problem of poor adhesion. According to some embodiments of the present invention, by adjusting the solid content of the adhesive resin contained in the adhesive layer 25, it is possible to realize a box packaging paper with excellent adhesion between the first paper 21p and the second mineral paper 22m. 【0125】 In some examples, the first paper 21p may be a single layer or a multi-layer paper. For example, the basis weight of the first paper 21p may be 150 to 250 g / m². 2 That's fine. 【0126】 The second region R2 according to the present invention may include a second paper 22p and a second mineral paper 22p. Specifically, the second mineral paper 22m may be placed on the second paper 22p, and more specifically, it may be placed directly on the second paper 22p. 【0127】 In Figure 4, the first direction D1 can mean, for example, the length direction of the box packaging 20 or the length direction of the cigarettes contained inside the box packaging 20. The second direction D2 may be a direction intersecting the first direction D1, and more specifically, it may be perpendicular to the first direction D1. In some examples, the first region R1 may overlap with the second region R2 with respect to the second direction D2. Here, overlap can mean that the first region R1 and the second region R2 include at least one region that overlaps with respect to the second direction D2. That is, the first region R1 can be defined as overlapping with the second region R2 if the first region R1 is in direct contact with the second region R2, or if there is a region that overlaps with respect to the second direction D2 even if they are not in direct contact. 【0128】 The adhesive layer 25 according to the present invention is placed between the second mineral paper 22m and the first paper 21p, and can connect the first region R1 and the second region R2 to each other. 【0129】 In some embodiments of the present invention, the adhesive layer 25 may include an adhesive resin having a solid content of 51 to 53% by weight. Specifically, when the solid content of the adhesive resin satisfies the above numerical range, an even better adhesive strength can be observed between the first paper 21p and the second mineral paper 22m. 【0130】 In some embodiments of the present invention, the adhesive resin may include an ethylene-vinyl acetate copolymer that imparts adhesive strength. 【0131】 In some embodiments of the present invention, the vinyl acetate content in the ethylene-vinyl acetate copolymer may be 40 to 60% by weight, 42 to 58% by weight, 45 to 55% by weight, 48 to 53% by weight, 49 to 51% by weight, or 50 to 51% by weight. In the ethylene-vinyl acetate copolymer, the density and flexibility of the ethylene-vinyl acetate copolymer may vary depending on the vinyl acetate content. According to some embodiments of the present invention, when the vinyl acetate content satisfies the above numerical range, the adhesive strength connecting the first region R1 and the second region R2 to each other can be further improved. 【0132】 In some embodiments of the present invention, the content of the ethylene-vinyl acetate copolymer may be 70 to 99% by weight, 71 to 99% by weight, 75 to 99% by weight, 80 to 99% by weight, or 85 to 99% by weight, based on the total weight of the adhesive layer. According to some embodiments of the present invention, when the content of the ethylene-vinyl acetate copolymer satisfies the above numerical range, the adhesive strength connecting the first region R1 and the second region R2 to each other can be further improved. Here, the total weight of the adhesive layer may mean the weight of the total solids of the adhesive resin excluding the solvent (e.g., water) in the adhesive resin of some embodiments. 【0133】 In some examples, the weight-average molecular weight (Mw) of the ethylene-vinyl acetate copolymer may be 100,000 to 900,000 g / mol, 150,000 to 800,000 g / mol, 200,000 to 700,000 g / mol, or 250,000 to 650,000 g / mol. Specifically, when the weight-average molecular weight (Mw) of the ethylene-vinyl acetate copolymer satisfies the above numerical range, the viscosity of the adhesive resin can be adjusted to an appropriate level, making the processability or applicability of the adhesive resin easier, and the miscibility with the plasticizer can also be adjusted to an appropriate level. 【0134】 In some embodiments of the present invention, the adhesive resin may further contain a plasticizer that facilitates the segmental movement of the ethylene-vinyl acetate copolymer. 【0135】 For example, the plasticizer is not particularly limited and may include at least one of phthalate-based plasticizers and non-phthalate-based plasticizers, more specifically phthalate esters such as dibutyl phthalate, di-n-octyl phthalate, bis(2-ethylhexyl) phthalate, bis(2-ethylhexyl) terephthalate, di-n-decyl phthalate, and diisodecyl phthalate; adipic acid esters such as bis(2-ethylhexyl) adipate, diisodecyl adipate, and di-n-octyl adipate; sebacate acid esters such as bis(2-ethylhexyl) sebacate and di-n-butyl sebacate; azelaic acid esters such as bis(2-ethylhexyl) azelate; citrate esters such as tributyl acetyl citrate; and chlorinated paraffin. Paraffins; Glycols such as polypropylene glycol; Epoxy-modified vegetable oils such as epoxidized soybean oil and epoxidized linseed oil; Phosphate esters such as trioctyl phosphate and triphenyl phosphate; Phosphite esters such as triphenyl phosphate; Ester oligomers such as esters of adipic acid and 1,3-butylene glycol, and esters of benzoic acid and dipropylene glycol; Low molecular weight polymers such as low molecular weight polybutene, low molecular weight polyisobutylene, and low molecular weight polyisoprene; Acrylic oligomers such as n-butyl polyacrylate and 2-ethylhexyl polyacrylate; Paraffin-based oils such as Diana Process Oil PW series (Idemitsu Kosan Co., Ltd.), SUNPURE LW70 or P series (Sun Oil Co., Ltd., Japan); SUNPURE It may include one or more oils selected from the group consisting of naphthenic oils such as N90 and NX90, and the SUNTHENE series (Sun Oil Co., Ltd. Japan); and aromatic oils such as JSO AROMA790 (Sun Oil Co., Ltd. Japan) and Vivatec500 (H&R Co., Ltd.). 【0136】 In some embodiments of the present invention, the content of the plasticizer may be 1 part by weight or more, 2 parts by weight or more, 3 parts by weight or more, 4 parts by weight or more, 5 parts by weight or more, or 6 parts by weight or more, and 7 parts by weight or less, 8 parts by weight or less, 9 parts by weight or less, or 10 parts by weight or less, specifically 1 to 10 parts by weight, 1 to 9 parts by weight, 2 to 8 parts by weight, 3 to 7 parts by weight, 4 to 7 parts by weight, 5 to 7 parts by weight, or 6 to 7 parts by weight. According to some embodiments of the present invention, when the content of the plasticizer satisfies the numerical range, the segmental movement of the ethylene-vinyl acetate copolymer can be easily regulated, further improving the adhesion between the first paper 21p and the second mineral paper 22m, and demonstrating excellent durability of the box packaging paper. 【0137】 In some embodiments of the present invention, the solid content in the adhesive resin may be 50 to 55% by weight, 50 to 54% by weight, 50 to 53% by weight, 51 to 53% by weight, or 52 to 53% by weight. According to some embodiments of the present invention, when the solid content in the adhesive resin satisfies the above numerical range, the adhesive strength between the first paper 21p and the second mineral paper 22m is further improved, resulting in excellent durability of the box packaging paper. 【0138】 In some examples, the pH of the adhesive resin may be 4 to 5. 【0139】 In some examples, the viscosity of the adhesive resin, measured at 20°C using a Brookfield RVT viscometer (spin 2 / 20 rpm), may be 590 to 610 cps, 595 to 605 cps, or 600 to 605 cps. Specifically, when the viscosity of the adhesive resin satisfies the above numerical range, the processability of the adhesive resin is easy, and the adhesive strength between the first paper 21p and the second mineral paper 22m can be further improved. [Examples] 【0140】 The following describes embodiments of the present invention in detail so that those with ordinary skill in the art to which the present invention pertains can easily implement it. However, these are merely examples, and the scope of the present invention is not limited to the following. 【0141】 [Manufacturing Example 1: Manufacturing of Inner Liners] 【0142】 <Example 1-1: Manufacturing of an inner liner containing mineral paper> 【0143】 Steps for crushing calcium carbonate: 【0144】 Specific gravity is 2.3, and refractive index n D The precipitated calcium carbonate, which has a ratio of 1.56 and a whiteness of 96%, is pulverized, and the average particle size D 50 We produced calcium carbonate powder with a particle size of approximately 2.5 μm. 【0145】 Step 1: Melt the mixture of HDPE and calcium carbonate powder. 【0146】 Density of 0.94 to 0.97 g / cm³ 3 A mixture of high-density polyethylene (HDPE) and calcium carbonate powder in a weight ratio of 2:8 was fed into an extruder 110 equipped with a twin-screw (diameter: 130 mm, rotation speed: 80 RPM) as shown in Figure 2, and then melted at 200°C to produce a molten product. 【0147】 The step of injecting the molten material into a mold and shaping it to produce a pre-sheet: 【0148】 After injecting the molten material into the mold inlet 120, the preliminary sheet was manufactured in the tube 140 by cooling it with cold air at 80°C coming out of the cooling means 130. 【0149】 Steps to manufacture a sheet by stretching the aforementioned spare sheet: 【0150】 The preliminary sheet was stretched in the lengthwise and widthwise directions at 110°C for 5 minutes using the first roll 160 shown in Figure 2, and then a symmetrically folded sheet was produced via the folding means 155. 【0151】 Steps to manufacture an inner liner by post-processing the aforementioned sheet: 【0152】 After cutting the symmetrically folded sheet with the cutting means 170, the mineral paper was wound onto the second roll 180 to produce an inner liner with a final thickness of 92 μm. 【0153】 <Comparative Example 1: Preparation of standard paper inner liner> 【0154】 A paper inner liner with a thickness of 61 μm, commonly used in this technical field (a tobacco packaging inner liner product from Kuniichi Paper Co., Ltd.), was prepared. 【0155】 [Experimental Example 1: Evaluation of the physical properties of the inner liner] 【0156】 The physical properties of the inner liners of Example 1-1 and Comparative Example 1 were measured using the evaluation method shown in Table 1 below, and the results are shown in Table 1 below. 【0157】 [Table 1] 【0158】 Referring to Table 1 above, Example 1-1 showed that, compared to Comparative Example 1, the inclusion of mineral paper resulted in significantly lower water permeability, and increased opacity, whiteness, and tensile strength. 【0159】 [Experimental Example 2: Evaluation of the deadfold performance of the inner liner] 【0160】 Excellent deadfold performance means that the folded portion of the inner liner does not unfold, thus maintaining the folded state more effectively. Specifically, in order to compare the deadfold performance of the inner liners of Example 1-1 and Comparative Example 1, experts with more than 10 years of experience in the tobacco industry were asked to evaluate the deadfold performance as a criterion for judging the defect rate under the conditions of a normal tobacco packaging machine process. As a result, the deadfold performance was evaluated as O for excellent, △ for average, and X for poor, and the results are shown in Table 2 below. 【0161】 [Table 2] 【0162】 Referring to Table 2 above, Example 1-1 showed superior deadfold performance compared to Comparative Example 1 due to the inclusion of mineral paper. 【0163】 [Experiment Example 3: Changes in the moisture content of shredded herb in cigarette inner liners] 【0164】 Figure 5 is a graph showing the moisture content change of the shredded tobacco in the inner liners of Example 1-1 and Comparative Example 1. Specifically, at 25°C and 50% relative humidity, tobacco containing shredded tobacco was inserted into the internal space defined by the tobacco inner liners of Example 1-1 and Comparative Example 1, respectively, and the moisture content (%) of the shredded tobacco was measured over the storage period (days). In Figure 5, the difference in the moisture content of the shredded tobacco represents the difference in the moisture content of the shredded tobacco contained in the inner liner of Comparative Example 1 compared to the moisture content of the shredded tobacco contained in the inner liner of Example 1-1. 【0165】 Referring to Figure 5, it was confirmed that the moisture content of the shredded herb contained in the internal space of the cigarette inner liner according to Example 1-1 remained even higher over a long period of time compared to Comparative Example 1, and that the range of change in the moisture content ratio was also lower in Example 1-1 compared to Comparative Example 1. 【0166】 [Experiment Example 4: Changes in moisture content of cigarette inner liners] 【0167】 Figure 6 is a graph showing the change in moisture content of the inner liners in Example 1-1 and Comparative Example 1 over time when the relative humidity conditions are changed. Specifically, the temperature in the experimental conditions was fixed at 25°C, and the relative humidity was adjusted to 33%, 43%, 57%, 67%, 75%, and 87%, respectively, and the change in moisture content (mg) of each cigarette inner liner over time was measured. 【0168】 Referring to Figure 6, it was confirmed that the tobacco inner liner of Example 1-1 showed almost no change in moisture content even when the relative humidity changed. In contrast, the tobacco inner liner of Comparative Example 1 showed a tendency for the change in moisture content to increase rapidly as the relative humidity increased. 【0169】 Through the aforementioned experimental results, it was confirmed that cigarette inner liners containing mineral paper exhibit less moisture change under varying relative humidity storage conditions compared to cigarette inner liners made of paper. Based on this, it can be inferred that they can effectively prevent moisture changes in shredded tobacco. 【0170】 [Manufacturing preparation example 1: Manufacturing of recycled high-density polyethylene] 【0171】 Pelletized waste high-density polyethylene was fed into a Bambury mixer (Brabender HAAKE RHEOMIX 600P), and the mixer temperature was adjusted to 170°C, the mixing speed to 40 RPM, and the mixing time to 10 minutes to produce recycled high-density polyethylene. 【0172】 [Examples 1-2: Manufacturing of an inner liner containing recycled polyolefin] 【0173】 Density of 0.94 to 0.97 g / cm³ 3An inner liner was manufactured in the same manner as in Example 1-1, except that 100 parts by weight of a base material, which was a mixture of recycled high-density polyethylene (HDPE) and calcium carbonate powder from Manufacturing Preparation Example 1 in a weight ratio of 2:8, and 0.5 parts by weight of stearic acid were fed into an extruder 110 equipped with a twin-screw (diameter: 130 mm, rotation speed: 80 RPM) as shown in Figure 2, and then melted at 200°C to produce a molten product. 【0174】 [Experimental Example 5: Evaluation of the biodegradability of inner liners] 【0175】 The biodegradability of the inner liners produced by the methods described in Examples 1-2 and Comparative Example 1 was measured in accordance with the ISO 14855-1 test standard. Specifically, the biodegradability of mineral paper and paper was measured for each of the inner liners produced by the methods described in Examples 1-2 and Comparative Example 1 by measuring the carbon dioxide (CO2) content generated under composting conditions, and the results are shown in Table 3 below. 【0176】 [Table 3] 【0177】 Referring to Table 3 above, it can be inferred that the inner liners of Example 1-2, by containing stearic acid which promotes the biodegradation of recycled polyolefins, have a higher degree of biodegradation compared to the paper inner liner of Comparative Example 1, which is made from pulp fibers. When the inner liners of Example 1-2 are buried in the ground, the biodegradation rate of the recycled polyolefins is increased by the action of geothermal heat and stearic acid, and the calcium carbonate returns to the soil, resulting in an environmentally friendly inner liner material. 【0178】 [Manufacturing preparation example 2: Manufacturing of adhesive resin] 【0179】 An adhesive resin having the composition shown in Table 4 below was manufactured. The remainder after removing the solids consisted of water, and the content of plasticizers and fillers in Table 4 below is shown in parts by weight per 100 parts by weight of ethylene-vinyl acetate copolymer. 【0180】 Viscosity of adhesive resin 【0181】 In Table 4 below, the viscosity of the adhesive resin was measured at 20°C using a Brookfield RVT viscometer (spin 2 / 20 rpm). 【0182】 Solid content 【0183】 The solid content of the adhesive resins in Table 4 below was analyzed in accordance with KS M3705. 【0184】 [Table 4] 【0185】 [Manufacturing Example 2: Manufacturing of Box Packaging Paper] 【0186】 <Example 2-1: Manufacturing of box packaging paper containing mineral paper> 【0187】 Steps for crushing calcium carbonate: 【0188】 Specific gravity is 2.3, and refractive index n D The precipitated calcium carbonate, which has a ratio of 1.56 and a whiteness of 96%, is pulverized, and the average particle size D 50 We produced calcium carbonate powder with a particle size of approximately 6 μm. 【0189】 Step 1: Melt the mixture of HDPE and calcium carbonate powder. 【0190】 Density of 0.94 to 0.97 g / cm³ 3A mixture of high-density polyethylene (HDPE) and calcium carbonate powder in a weight ratio of 1.5:8.5 was fed into an extruder 110 equipped with a twin-screw (diameter: 130 mm, rotation speed: 80 RPM) as shown in Figure 2, and then melted at 200°C to produce a molten product. 【0191】 The step of injecting the molten material into a mold and shaping it to produce a pre-sheet: 【0192】 After injecting the molten material into the mold inlet 120, the spare sheet was manufactured by cooling it with 70°C cold air from the cooling means 130. 【0193】 Steps to manufacture a sheet by stretching the aforementioned spare sheet: 【0194】 The preliminary sheet was stretched in the lengthwise and widthwise directions at 100°C for 2 minutes using the first roll 160 and branch tube 150 shown in Figure 2, and then folded into a sheet using the folding means 155. 【0195】 Steps to manufacture box packaging paper by post-processing the aforementioned sheet: 【0196】 After cutting the folded sheet with the cutting means 170, mineral paper was produced by winding it onto the second roll 180, thereby ultimately producing box packaging paper with a thickness of 250 μm. 【0197】 <Example 3: Manufacturing of box packaging paper containing mineral paper laminated with paper> 【0198】 Mineral paper with a thickness of 100 μm was manufactured using the method described in Example 2-1. The adhesive resin described in the preparation example was applied to one side of the mineral paper and then dried at 110°C for 3 minutes. The side of the mineral paper coated with the adhesive resin was laminated to paper to manufacture the box packaging paper of Example 3. At this time, the basis weight of the paper was 190 g / m². 2 The thickness of the paper is 265 μm. 【0199】 <Comparative Example 2: Preparation of standard cardboard box packaging paper> 【0200】 We prepared a paper box packaging paper with a thickness of 280 μm, which is commonly used in this technical field (HANCHANG PAPER's ivory cardboard product for cigarette box packaging). 【0201】 [Experimental Example 6: Physical Properties of Box Packaging Paper] 【0202】 The physical properties of the box packaging paper produced in Examples 2-1, 3, and Comparative Example 2 were measured using the evaluation method described below, and the results are shown in Table 5 below. 【0203】 [Table 5] 【0204】 Referring to Table 5 above, Examples 2-1 and 2-3 showed a significant reduction in moisture permeability at 38°C and 100% RH compared to Comparative Example 2, due to the inclusion of mineral paper. 【0205】 Furthermore, comparing Examples 2-1 and 2-3 in terms of physical properties based on the composition of the box packaging paper, it was found that the structure in which mineral paper and paper are laminated significantly increased stiffness, as well as opacity and whiteness. 【0206】 [Example 2-2: Production of box packaging paper containing recycled polyolefin] 【0207】 Density of 0.94 to 0.97 g / cm³ 3Box packaging paper was manufactured in the same manner as in Example 2-1, except that 100 parts by weight of a base material, which was a mixture of recycled high-density polyethylene (HDPE) and calcium carbonate powder from Manufacturing Preparation Example 1 in a weight ratio of 1.5:8.5, and 0.5 parts by weight of stearic acid were fed into an extruder 110 equipped with a twin-screw (diameter: 130 mm, rotation speed: 80 RPM) as shown in Figure 2, and then melted at 200°C to produce a molten product. 【0208】 [Experimental Example 7: Evaluation of the biodegradability of box packaging paper] 【0209】 The biodegradability of the box packaging paper according to Example 2-2 and Comparative Example 2 was measured in accordance with the ISO 14855-1 test standard. Specifically, the biodegradability of each of the box packaging papers according to Example 2-2 and Comparative Example 2 was measured by determining the carbon dioxide (CO2) content generated under composting conditions, and the results are shown in Table 6 below. 【0210】 [Table 6] 【0211】 Referring to Table 6 above, Example 2-2 showed that the inclusion of mineral paper resulted in a higher degree of biodegradability compared to Comparative Example 2. 【0212】 [Manufacturing Example 3: Manufacturing of box packaging paper with different types of adhesive resins] 【0213】 <Examples 4 and 5: Box packaging paper with a different type of adhesive resin compared to Example 3> 【0214】 Box packaging paper was manufactured using the same method as in Example 3, and the box packaging paper according to Examples 4 and 5 was manufactured using the adhesive resins of Comparative Preparation Example 1 (Example 4) and Comparative Preparation Example 2 (Example 5), respectively, instead of the adhesive resin of the above-mentioned preparation example. 【0215】 [Experimental Example 8: Evaluation of Adhesion Performance Between MP Surface and Paper Surface] 【0216】 The adhesive strength between one side of the mineral paper and one side of the paper laminated to the mineral paper was evaluated according to the following criteria for the box packaging paper according to Examples 3 to 5. 【0217】 Adhesion strength evaluation criteria: 【0218】 In the box packaging paper according to Examples 3 to 5, adhesive resin was applied to one side of the mineral paper, then the paper was laminated and cured for 24 hours. After that, when the mineral paper and the paper were separated from each other, the degree of damage to the paper surface was evaluated as O, partial damage as △, and simple peeling as X. The results are shown in Table 7 below. A higher degree of damage to the paper surface indicates better adhesive strength performance. 【0219】 [Table 7] 【0220】 Referring to Table 7 above, it was confirmed that when the solid content in the adhesive resin of Example 3 satisfies 51 to 53% by weight, the adhesive strength between one side of the mineral paper and the paper surface becomes even higher. 【0221】 Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto. Various modifications and improvements made by those skilled in the art using the basic concepts of the present invention as defined in the following claims also fall within the scope of the present invention. [Explanation of symbols] 【0222】 10: Inner Liner 20: Box wrapping paper 21m: First Mineral Paper 21p: 1st paper 22m: 2nd Mineral Paper 22p: 2nd paper 25: Adhesive layer 30: Metal foil 100: Cigarette case 110: Extruder 120: Mold entrance 130: Cooling means 140: Tube 155: Folding method 160: First Roll 170: Cutting means 180: Second Roll 200: Mineral paper manufacturing equipment R1: 1st area R2: 2nd area

Claims

[Claim 1] Polyolefins, and Contains calcium carbonate, Packaging material for cigarettes. [Claim 2] The density of the aforementioned polyolefin is 0.90 g / cm³. ３ 1.00g / cm or more ３ The following is the tobacco packaging material according to claim 1. [Claim 3] In accordance with ISO 2469, the whiteness of the calcium carbonate is 94% or higher. The tobacco packaging material according to claim 1. [Claim 4] The tobacco packaging material according to claim 1, wherein the crystalline form of the calcium carbonate is precipitated calcium carbonate (PCC) or ground calcium carbonate (GCC). [Claim 5] The weight ratio of the polyolefin to the calcium carbonate is 1:9 or more and 3:7 or less. The tobacco packaging material according to claim 1. [Claim 6] It also contains stearic acid, The aforementioned polyolefin includes recycled polyolefins. The tobacco packaging material according to claim 1. [Claim 7] The content of stearic acid is 0.1 parts by weight or more and 2 parts by weight or less per 100 parts by weight of the base material composed of the recycled polyolefin and the calcium carbonate. The tobacco packaging material according to claim 6. [Claim 8] In accordance with the ISO 14855-1 test standard, the biodegradability of the aforementioned tobacco packaging material is 75% or higher. The tobacco packaging material according to claim 6. [Claim 9] Inner liner, and Including the box packaging paper on the inner liner, At least one of the inner liner and the box packaging paper includes the tobacco packaging material described in claim 1. Cigarette case. [Claim 10] The aforementioned box packaging paper is The aforementioned cigarette packaging material further includes paper, The cigarette case according to claim 9. [Claim 11] The basis weight of the aforementioned paper is 150 g / m². ２ More than 250g / m ２ The following is: The cigarette case according to claim 10. [Claim 12] In accordance with the KS M ISO 15106-2 test standard, the moisture permeability of the inner liner under conditions of 38°C and 100% R.H. is 20 g / m². ２ - Less than 24 hours The cigarette case according to claim 9. [Claim 13] The aforementioned box packaging paper is A first area including a first sheet and a first mineral paper on the first sheet, A second area including a second sheet of paper and a second mineral paper on the second sheet, and Includes an adhesive layer disposed between the first region and the second region, The aforementioned adhesive layer is Placed between the first paper and the second mineral paper, The first mineral paper and the second mineral paper include the same or different tobacco packaging material. The cigarette case according to claim 9. [Claim 14] The adhesive layer comprises an ethylene-vinyl acetate copolymer and a plasticizer. The cigarette case according to claim 13. [Claim 15] The content of the plasticizer is 1 part by weight or more and 10 parts by weight or less per 100 parts by weight of the ethylene-vinyl acetate copolymer. The cigarette case according to claim 14.

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