Packaging material for containing aerosol-transmitting articles

Abstract

The present invention relates to a packaging material for containing an aerosol-transmitting article, the packaging material including a base paper, a first coating layer on an upper layer of the base paper, and a second coating layer on a lower layer of the base paper, the second coating layer including a water-resistant agent, and the aerosol-transmitting article including tobacco granules having a pH of 8 or more.

Description

[Technical field]

[0001] The present invention relates to a packaging material for containing an aerosol transfer article. [Background technology]

[0002] In order to transmit the inherent flavor of the aerosol-generating substance and solve problems such as deterioration of the flavor liquid and generation of unpleasant odors, research is being conducted to increase the amount of volatile substances such as nicotine transferred from the aerosol-generating substance at lower temperatures by adjusting the pH or using roasted aerosol-generating substances.

[0003] However, since such aerosol-generating materials easily transfer volatile substances even at low temperatures, the volatile substances are easily transferred to the packaging material during distribution and consumption of the aerosol-transferred products, which causes a problem that the taste of the tobacco deteriorates continuously over time. This is particularly problematic for smoking articles that use highly volatile substances such as free nicotine.

[0004] In the conventional technology, the tobacco flavor is stored in an OPP film, an inner liner with aluminum laminated in the packaging material. However, the use of aluminum laminated packaging materials is gradually being restricted from the viewpoint of environmental conservation. In addition, when a sheet is manufactured using only polymers, it is difficult to form the shape of the packaging material because it is very soft or very hard, and there is a problem that high costs are required.

[0005] There is a demand for the development of a packaging material that can prevent volatile substances from being transferred to the packaging material and from volatilizing away from the aerosol-transferred article. Summary of the Invention [Problem to be solved by the invention]

[0006] In order to solve the above-mentioned problems, the present invention aims to provide a packaging material for containing an aerosol transfer article that can be carried by a smoking article for a longer period of time without volatile substances such as nicotine being transferred to the packaging material by treating the packaging material with a water-resistant agent.

[0007] However, the problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. [Means for solving the problem]

[0008] According to one embodiment of the present invention, there is provided a packaging material for containing an aerosol-transmitting article, the packaging material comprising a base paper, a first coating layer on an upper layer of the base paper, and a second coating layer on a lower layer of the base paper, the second coating layer comprising a water-resistant agent, and the aerosol-transmitting article comprising tobacco granules having a pH of 8 or higher.

[0009] According to another embodiment of the present invention, there is provided a method for manufacturing a packaging material according to one embodiment of the present invention, comprising a step (S1) of coating a first coating layer on an upper layer of base paper and a step (S2) of coating a second coating layer on a lower layer of base paper.

[0010] According to a further embodiment of the present invention, there is provided a smoking article package including an aerosol-transmitting article and a wrapping material containing the same, wherein the aerosol-transmitting article includes tobacco granules having a pH of 8 or higher, and the wrapping material includes a base paper, a first coating layer on an upper layer of the base paper, and a second coating layer on a lower layer of the base paper, and the second coating layer includes a water-resistant agent. Effect of the Invention

[0011] When the packaging material of the present invention is used for an aerosol transfer article containing a highly volatile substance such as nicotine, the problem of the volatile substance being transferred to the packaging material can be prevented and the aerosol transfer article can store the volatile substance to the maximum extent, thereby providing the smoker with a uniform tobacco taste and increasing the satisfaction of smoking.

[0012] The effects of the present invention are not limited to the above effects, but should be understood as including all effects that can be inferred from the configuration of the invention described in the detailed description of the present invention or the claims. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 shows a packaging material including polyethylene as a second coating layer according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing a packaging material including polylactic acid in a second coating layer according to one embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram showing a packaging material including latex in a second coating layer according to one embodiment of the present invention. [Figure 4] FIG. 2 is a diagram showing a packaging material including an acrylic polymer in a second coating layer according to an embodiment of the present invention. [Diagram 5] FIG. 2 is a diagram showing a packaging material including a base paper and a first coating layer as a comparative example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. However, various modifications may be made to the embodiments, and the scope of the patent application is not limited or restricted by such embodiments. It should be understood that all modifications, equivalents, or alternatives to the embodiments are included in the scope of the patent.

[0015] The terms used in the examples are merely used for the purpose of explanation and are not to be construed as being limiting. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this specification, the terms "include" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, and should be understood as not precluding the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0016] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Commonly used predefined terms should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted as ideal or overly formal unless expressly defined in this specification.

[0017] In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the duplicated description thereof will be omitted. In the description of the embodiments, if a detailed description of related prior art is determined to unnecessarily obscure the gist of the embodiments, the detailed description thereof will be omitted.

[0018] In addition, in describing components of the embodiments, terms such as first, second, A, B, (a), (b), etc. are used to distinguish the components from other components, and the terms do not limit the nature, order, or sequence of the components.

[0019] Components having functions common to those of any of the embodiments will be described using the same names in the other embodiments. Unless otherwise specified, the description of any of the embodiments will be applied to the other embodiments, and detailed description will be omitted to the extent that they overlap.

[0020] Throughout the specification, when any part is referred to as "comprising" any element, this does not mean to exclude other elements but to further include the other elements.

[0021] Throughout the specification, "aerosol-transfer article" means an article capable of generating an aerosol, such as a cigarette, cigar, etc. An aerosol-transfer article may include an aerosol-generating substance or an aerosol-forming substrate. The aerosol-generating substance or the aerosol-forming substrate may be solid or gaseous. For example, a solid aerosol-generating substance may include a solid substance based on tobacco raw materials, such as sheet tobacco, cut tobacco, reconstituted tobacco, etc. A gaseous aerosol-generating substance may include a volatile substance, such as free nicotine.

[0022] Also, throughout the specification, "upstream" or "upstream direction" means a direction away from the mouth of a user smoking a smoking article, and "downstream" or "downstream direction" means a direction towards the mouth of a user smoking a smoking article.

[0023] Throughout the specification, "smoking article package" refers to the entirety of the aerosol transfer article and the wrapping material, where the wrapping material is capable of containing the aerosol transfer article.

[0024] According to one embodiment of the present invention, a packaging material for containing an aerosol-transmitting article can be provided. Here, the packaging material includes a base paper, a first coating layer, and a second coating layer. The first coating layer may be located on the upper side of the base paper, and the second coating layer may be located on the lower side of the base paper. The aerosol-transmitting article may include tobacco granules having a pH of 8 or higher. When the packaging material has the structure of the present invention, it can be easily molded into the shape of the packaging material and is more economical than when the polymer itself is manufactured into a sheet shape.

[0025] The second coating layer includes a water-resistant agent, and the packaging material contains a water-resistant agent, which can prevent volatile substances from being absorbed into the packaging material.

[0026] The water-resistant agent may include a polymer. Preferably, the water-resistant agent may include at least one of the group consisting of polylactic acid, polyethylene, acrylic polymer, and latex, and more preferably may be polylactic acid or polyethylene. Examples of acrylic polymers include polymethyl methacrylate (PMMA), polyacrylonitrile (PAN), polyacrylic acid (PAA), etc. When the acrylic polymer is used in the form of latex, it is possible to produce a packaging material more economically and environmentally friendly. In addition, the water-resistant agent may additionally include an organic substance.

[0027] In the packaging material according to one embodiment of the present invention, the coating amount of the second coating layer may be 5 gsm to 40 gsm, preferably 10 gsm to 35 gsm. The thickness of the second coating layer may be 20 μm to 35 μm, preferably 25 μm to 30 μm. However, it is not limited to the range described above.

[0028] The packaging material according to one embodiment of the present invention can package an aerosol transfer article containing free nicotine. The tobacco granules contained in the aerosol transfer article may be adjusted to have a pH of 8 or more using a pH adjuster. For example, the pH of the tobacco granules may be 8 to 14, 8 to 12, 8 to 10, or 8.3 to 9.5. By adjusting the pH, 80% or more of the nicotine contained in the tobacco granules exists as free nicotine. Therefore, the packaging material is used for packaging an aerosol transfer article containing highly volatile free nicotine.

[0029] In a packaging material according to an embodiment of the present invention, a first coating layer includes a first layer and a second layer located on the first layer.

[0030] The first layer may include calcium carbonate. The calcium carbonate may be in the form of irregular spheres with a diameter of 2 μm or less (60% or more). The first layer may additionally include organic matter and clay. By coating the first layer on the upper surface of the base paper, it is possible to remove unevenness on the surface of the base paper.

[0031] The second layer may include a water-resistant agent. Preferably, the water-resistant agent may include latex. The second layer may additionally include organic matter, clay, and calcium carbonate. The calcium carbonate may be in the form of irregular spheres with a diameter of 2 μm or less (90% or more). Coating the second layer on top of the first layer can impart water resistance to the surface of the packaging material to facilitate printing.

[0032] For example, the organic matter may include a binder, and the clay may be in the form of a platelet type, but is not limited to the examples given.

[0033] In the packaging material according to one embodiment of the present invention, the basis weight of the base paper is 200 g / m 2 ~260g / m 2 The thickness of the base paper may be 300 μm to 400 μm, but is not limited to the ranges described above.

[0034] In the packaging material according to an embodiment of the present invention, the packaging material may be, for example, at least one selected from the group consisting of a box wrapper, an inner frame, and an inner and an inner, but is not limited to the examples described above.

[0035] According to another embodiment of the present invention, there is provided a method for manufacturing the packaging material, comprising the steps of: coating an upper layer of a base paper with a first coating layer (S1); and coating a lower layer of the base paper with a second coating layer (S2).

[0036] In step S1, a first coating layer is formed. The first and second layers constituting the first coating layer may be formed by a conventional coating method. For example, the first and second layers may be coated by a blade method, and the second layer may be coated by a rod method. However, the present invention is not limited to the examples described above.

[0037] In step S2, a second coating layer is formed. For example, the second coating layer may be coated using a blade method or an extrusion coating (T-die) method, but is not limited to the examples described above.

[0038] In a method for manufacturing a packaging material according to an embodiment of the present invention, a second coating liquid is applied to the lower layer of base paper during manufacturing of the packaging material, and then dried. Here, the drying temperature may be 60°C to 90°C, preferably 70°C to 80°C. By drying the packaging material at the above temperature, the flexibility of the polymer can be preserved without causing denaturation of the polymer. Meanwhile, if the drying temperature is less than 60°C, the polymer cannot reach its glass transition temperature and cannot be processed. If the drying temperature exceeds 90°C, the polymer itself may be damaged when applied to the packaging material, or the cutting blade may break when embossing the packaging material.

[0039] According to a further embodiment of the present invention, there is provided a smoking article package including an aerosol-transmitting article and the wrapping material for containing the same, wherein the aerosol-transmitting article may include tobacco granules that have been treated with a base to have a pH of 8 or higher, and the wrapping material may include a base paper; a first coating layer on an upper layer of the base paper; and a second coating layer on a lower layer of the base paper, and the second coating layer may include a water-resistant agent.

[0040] The aerosol transfer article includes a rod containing a volatile material and a filter rod downstream of the volatile material containing rod. The volatile material containing rods may be used in an alternating manner. Each rod may be made up of one or more segments.

[0041] For example, the volatile material containing rod may include a first filter segment, a second filter segment, and a cavity segment, the first filter segment being disposed at the most upstream position of the volatile material containing rod, the second filter segment being disposed downstream from the first filter segment, and the cavity segment being disposed between the first filter segment and the second filter segment.

[0042] The material of the first filter segment and the second filter segment is not limited, but may preferably include acetate tow.

[0043] The cavity segment may include tobacco granules having a pH of 8 or more. For example, the pH of the tobacco granules may be 8 to 14, 8 to 12, 8 to 10, or 8.3 to 9.5. Here, the pH of the tobacco granules is adjusted by applying a pH adjuster to the volatile substance granules, and the pH adjuster may include a basic salt.

[0044] Free nicotine has the characteristic of providing a stronger stimulation to the neck than nicotine salts. When the pH of the tobacco granules is adjusted to 8 or more, 80% or more of the nicotine contained in the tobacco granules exists as free nicotine. That is, the cavity segments may be filled with free nicotine. Free nicotine has the most basic structure of nicotine as a non-ionic (free-based) substance with hydrogen ions removed. While the boiling point of nicotine is 247°C, free nicotine burns at a temperature lower than the boiling point, and its vapor burns at 35°C. Free nicotine has a higher vapor pressure than nicotine salts, so it can be transferred at a low temperature. If the aerosol transfer article contains free nicotine, the aerosol transfer article can be used at a lower temperature, thereby reducing problems caused by burning or heating a volatile substance at a high temperature.

[0045] The filter rod may include a cooling segment and a mouthpiece segment.

[0046] The aerosol transfer article may be used in an aerosol generating device after being removed from the smoking article package.

[0047] The aerosol generating device may be a heated or non-heated device, preferably a non-heated device. For example, a non-heated aerosol generating device includes a storage unit that stores an aerosol transfer article, an atomizing unit that generates an aerosol, and a power supply unit that transmits power required to heat the atomizing unit. When the atomizing unit is heated, the aerosol generated in the atomizing unit passes through the aerosol transfer article, and the volatile substance is transferred.

[0048] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples.

[0049] 1. Packaging design A box wrapping paper was manufactured that included a base paper, a first coating layer and a second coating layer. The specific design details are as follows:

[0050] Example 1 A box wrapper was manufactured as shown in Figure 1. The second coating layer contained polyethylene, the second coating weight was 35 gsm, and the thickness of the second coating layer was 28 μm. The second coating layer was coated using the extrusion coating (T-die) method.

[0051] Example 2 A box wrapper as shown in Figure 2 was produced in the same manner as in Example 1, except that the second coating layer contained polylactic acid instead of polyethylene.

[0052] Example 3 A box wrapper as shown in Figure 3 was produced in the same manner as in Example 1, except that the second coating layer contained calcium carbonate, clay, binder, and latex instead of polyethylene, the amount of the second coating was 10-12 gsm, and coating was performed by a blade method. Here, the content of latex was 1-5% based on the total weight of the base paper.

[0053] Example 4 A box wrapper as shown in Figure 4 was manufactured in the same manner as in Example 1, except that the second coating layer contained an acrylic polymer instead of polyethylene, additionally contained clay to achieve viscosity, and was coated using a blade method. Here, the acrylic polymer contained 95% latex based on the total weight of the base paper.

[0054] Comparative Example A box wrapper without a second coating layer was produced as shown in Figure 5. A packaging material consisting of a base paper and a first coating layer was produced.

[0055] 2. Measurement of nicotine transfer amount The aerosol-transfer articles of Examples 1 to 4 and Comparative Example were stored, and the amount of nicotine transferred from the aerosol-transfer articles to the filter rod (upstream portion), the box wrapper, and the inner frame was measured. The aerosol-transfer articles were stored for 3, 5, 7, and 9 days. The results are shown in Table 1 below.

[0056] [Table 1]

[0057] The amount of nicotine transferred to the box wrapping paper and inner frame decreased in the following order: Comparative Example > Example 3 > Example 4 > Example 2 > Example 1. That is, compared to the Comparative Example, not much nicotine was transferred to the box wrapping paper and inner frame in Examples 1 to 4. Specifically, the results showed that the wrapping materials absorbed less nicotine in the order of Example 1, Example 2, Example 4, and Example 3.

[0058] During a storage period of 3 to 9 days, the ratio of the amount of nicotine transferred to the box wrapping paper and inner frame in Examples 1 to 4 was 14 to 60%, compared to the amount of nicotine transferred to the box wrapping paper and inner frame in the comparative example, which showed a 40 to 86% decrease in the amount of nicotine transferred.

[0059] On the other hand, compared to the Comparative Example, it was observed that the amount of nicotine transferred to the filter rod increased in Examples 1 to 4. It can be seen that when using the box wrappers of Examples 1 to 4, the aerosol transfer article further preserves nicotine.

[0060] From the above results, it is predicted that by using a packaging material having a coating layer containing the water-resistant agent of the present invention as described in the claims for an aerosol-transferable article containing tobacco granules with a pH of 8 or higher, the aerosol-transferable article will be able to further preserve volatile substances, thereby providing smokers with a uniform tobacco taste.

[0061] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to the above embodiments, and a person having ordinary skill in the art can apply various technical modifications and variations based on the above. For example, the described techniques may be performed in an order different from that described, and / or the components of the described systems, structures, devices, circuits, etc. may be combined or combined in a form different from that described, or may be replaced or substituted by other components or equivalents to achieve appropriate results.

[0062] Accordingly, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

Claims

1. A packaging material for containing an aerosol transfer article, comprising: The packaging material includes a base paper and A first coating layer on the upper side of the base paper; A second coating layer on the lower side of the base paper; Including, the second coating layer comprises a water resistant agent; The aerosol transfer article is a packaging material comprising tobacco granules having a pH of 8 or greater.

2. 2. The packaging material according to claim 1, wherein 80% or more of the nicotine contained in the tobacco granules is present as free nicotine.

3. The packaging material according to claim 1 or 2, wherein the water-resistant agent comprises at least one selected from the group consisting of polylactic acid, polyethylene, an acrylic polymer, and latex.

4. The packaging material according to claim 1 or 2, wherein the second coating layer has a thickness of 20 μm to 35 μm.

5. 3. The packaging material of claim 1, wherein the first coating layer comprises a first layer and a second layer located on top of the first layer, the first layer comprising calcium carbonate, and the second layer comprising a water-resistant agent.

6. The base paper has a basis weight of 200 g / m ２ ~260g / m ２ The packaging material according to claim 1 or 2,

7. The packaging material according to claim 1 or 2, wherein the thickness of the base paper is 300 μm to 400 μm.

8. The packaging material according to claim 1 or 2, wherein the packaging material is at least one selected from the group consisting of a box wrapper, an inner frame, and an inner and an inner.

9. A step of coating a first coating layer on the upper side of the base paper (S1 step); A step of coating a second coating layer on the lower part of the base paper (step S2); A method for producing the packaging material according to claim 1 or 2, comprising:

10. The method according to claim 9, wherein in step S2, the second coating liquid is applied to the lower layer of the base paper and dried at 60°C to 90°C.

11. A smoking article package including an aerosol transfer article and a wrapping material for containing the same, the aerosol transfer article comprises tobacco granules having a pH of 8 or greater; The packaging material includes a base paper and A first coating layer on the upper side of the base paper; A second coating layer on the lower side of the base paper; Including, The second coating layer comprises a water resistant agent.

12. The aerosol transfer article includes a volatile material containing rod and a filter rod; The volatile substance containing rod is a first filter segment disposed at the most upstream position of the volatile substance containing rod; A second filter segment disposed downstream of the first filter segment; a cavity segment disposed between the first filter segment and the second filter segment; Including, The smoking article package of claim 11 , wherein the cavity segment comprises tobacco granules having a pH of 8 or greater.

13. The smoking article package of claim 12, wherein 80% or more of the nicotine contained in the tobacco granules is present as free nicotine.

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