Moisture control paper for smoking articles and smoking article package containing same

Abstract

The present invention includes uncoated paper having a basis weight of 220 g / m 2 ~260g / m 2 and the thickness is 280 μm to 320 μm.

Description

[Technical field]

[0001] SMOKING ARTICLE MOISTURE CONTROL PAPER AND SMOKING ARTICLE PACKAGES INCLUDE THE SAME FIELD OF THE DISCLOSURE The present invention relates to smoking article moisture control papers and smoking article packages containing same. [Background technology]

[0002] Smoking articles have been produced and sold in a pack of smoking articles that are packed in a packaging material for the smoking articles. Examples of the packaging material for the smoking articles include a box wrapper, an inner liner, an inner frame, etc. Specifically, the group of smoking articles is surrounded by an inner liner, and the group of smoking articles surrounded by the inner liner is at least partially surrounded by an inner frame and then accommodated in a space inside the box wrapper.

[0003] Smoking articles are produced by controlling materials so that they have a moisture content of about 10% after manufacture. When the smoking articles are stored in the smoking article packaging material, the moisture content is maintained by the smoking article packaging material. However, when the smoking article package is exposed to a humid environment or after the smoking article packaging material is opened, the moisture content in the smoking article increases due to moisture flowing in from the outside, which creates a problem of providing thickness to the smoker when smoking.

[0004] Generally, the base paper of existing smoking article packaging materials undergoes a coating process to improve printability. In order to perform this coating, the base paper must be water resistant, so additives such as a moisture enhancer and a water resistant agent are added during the production of the base paper. Since such base paper has less moisture than cellulose that does not contain additives, when the smoking article packaging material is opened and then resealed, the smoking article is exposed to a humid environment, which increases the moisture content of the smoking article. Therefore, there is a need to develop a smoking article packaging material that can absorb moisture within the packaging material better than existing smoking article packaging materials. Summary of the Invention [Problem to be solved by the invention]

[0005] In order to solve the above problems, the present invention aims to provide a moisture control paper for smoking articles that prevents moisture from penetrating into smoking articles as much as possible while still allowing manufacturing operations for smoking article packaging materials.

[0006] 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]

[0007] According to one embodiment of the present invention, a smoking article moisture control paper is provided, comprising an uncoated paper and having a basis weight of 220 g / m 2 ~260g / m 2 and a thickness of 280 μm to 320 μm.

[0008] According to another embodiment, a smoking article package is provided which includes a smoking article and one or more packaging materials for the smoking article, at least one of the single or more packaging materials for the smoking article includes a smoking article moisture control paper according to one embodiment of the present invention. Effect of the Invention

[0009] When a packaging material for smoking articles is manufactured using the smoking article moisture control paper of the present invention, the packaging material for smoking articles absorbs moisture, and the moisture content within the smoking article is relatively uniform. In addition, since the moisture content within the smoking article does not increase, the smoker does not feel hot when smoking, but can still enjoy a uniform tobacco flavor, thereby enhancing the satisfaction of smoking.

[0010] The effects of the present invention are not limited to the effects described above, but should be understood to include 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]

[0011] [Figure 1] FIG. 1 is a schematic diagram of a smoking article package 10 according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, the embodiments will be described in detail with reference to the attached Fig. 1. 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] Throughout the specification, "smoking article" means an item capable of generating an aerosol, such as a tobacco (cigarette), a cigar, etc. A smoking article may include an aerosol-generating material or an aerosol-forming substrate. A smoking article may also include solid materials based on tobacco raw materials, such as sheet tobacco, cut tobacco, reconstituted tobacco, etc. A smoking material may include a volatile substance.

[0020] Throughout the specification, the package 10 of smoking articles is meant to encompass the smoking articles and wrapping material for the smoking articles.

[0021] Throughout the specification, "making a box" means making a box of the correct shape, specifically, forming a wrapper such as a cigarette packet into an angular shape using paper.

[0022] Throughout the specification, "moisture content" refers to the amount of moisture within a smoking article.

[0023] Throughout the specification, "Cobb sizing" refers to the amount of water absorbed by a paper of a given area when a given amount of water is poured onto the paper, as measured by weight.

[0024] Throughout the specification, "moisture absorption" is a measurement of the extent to which a smoking article absorbs moisture at a particular temperature and humidity.

[0025] Throughout the specification, "group of smoking articles" means a pack-quantity of smoking articles.

[0026] Throughout the specification, "general paper" refers to paper that contains additives such as wet strength agents, water resistance agents, etc.

[0027] According to an embodiment of the present invention, a moisture control paper for smoking articles is provided, which comprises an uncoated paper, wherein the basis weight of the moisture control paper for smoking articles is 220 g / m 2 ~260g / m 2 and the thickness may be 280 μm to 320 μm. Preferably, the basis weight is 228 g / m 2 ~248g / m 2 and the thickness may be 285 μm to 305 μm.

[0028] The uncoated paper means a base paper that does not have any additives added during the manufacture of the paper and does not have water resistance, such as, but not limited to, wet strength agents, water resistance agents, etc.

[0029] The smoking article moisture control paper has a basis weight of 260 g / m 2 If the thickness exceeds 320 μm, the bending stiffness and elasticity of the paper increases, making it difficult to manufacture the paper into a box and impossible to apply the equipment. 2 If the thickness is less than 280 μm, it is difficult to maintain the shape of the box after it is manufactured.

[0030] In one embodiment of the present invention, the moisture content of the smoking article moisture control paper may be 3% to 5%, preferably 3.5% to 4.5%, i.e. the moisture content of the paper itself is similar to that of general paper.

[0031] In one embodiment of the present invention, the Cobb sizing degree of the moisture control paper for smoking articles is 340 cc / m 2 ~360cc / m 2 (Cobb test 20 seconds standard), preferably 345cc / m 2 ~355cc / m 2 The moisture control paper for smoking articles may absorb relatively more moisture than general paper. For example, under the above conditions, the Cobb sizing degree of the moisture control paper for smoking articles is improved by 13 to 17 times, preferably 13.6 to 14.4 times, compared to the Cobb sizing degree of general paper.

[0032] In one embodiment of the present invention, the wet tensile strength of the smoking article moisture control paper may be 2 kN / m or more. For example, it may be 2 kN / m to 6 kN / m, or 3 kN / m to 5 kN / m. If the wet tensile strength is less than 2 kN / m, it will contain a lot of moisture and will be difficult to maintain the shape required for manufacturing the box.

[0033] In one embodiment of the present invention, the steepness of the smoking article moisture control paper may be 45 gf·cm or more in the MD direction and 25 gf·cm or more in the CD direction. For example, the steepness may be 45 gf·cm to 90 gf·cm, or 60 gf·cm to 80 gf·cm in the MD direction, and 25 gf·cm to 60 gf·cm, or 40 gf·cm to 50 gf·cm in the CD direction. If the steepness is less than 45 gf·cm in the MD direction and / or less than 25 gf·cm in the CD direction, the smoking article moisture control paper will not become hard and it will be difficult to maintain the shape of the box.

[0034] In one embodiment of the present invention, the roughness of the moisture control paper for smoking articles may be 1.4 μm or less. For example, the roughness may be more than 0 μm and less than 1.4 μm, or 1 μm to 1.4 μm or less. If the roughness exceeds 1.4 μm, the moisture control paper for smoking articles is too rough, making it difficult to manufacture the paper into a box.

[0035] In one embodiment of the present invention, the gloss of the smoking article moisture control paper may be 40% or more. For example, the gloss may be 40% to 60%, or 42% to 50%. The packaging material for smoking articles also serves to improve the aesthetics of the product by printing a design on the surface. If the gloss of the smoking article moisture control paper is less than 40%, printing is not easy.

[0036] In one embodiment of the present invention, the smoking article moisture control paper may be used in a wrapping material for smoking articles, for example, the wrapping material for smoking articles may be an inner liner 100, an inner frame 120, or a box wrapper 140, but is not limited to the examples described.

[0037] In a further embodiment of the present invention, a smoking article package 10 may be provided. The smoking article package 10 may include smoking articles and a wrapping material for smoking articles, and the smoking article moisture control paper includes an uncoated paper and has a basis weight of 220 g / m 2 ~260g / m 2 and may have a thickness of 280 μm to 320 μm. The packaging material for smoking articles may be at least one selected from the group consisting of an inner liner 100, an inner frame 120, and a box wrapping paper 140. Here, the packaging material for smoking articles may include the smoking article moisture control paper. For example, in a smoking article package including a smoking article, an inner liner 100, and a box wrapping paper 140, the smoking article may be surrounded by the inner liner 100, and at least one of the inner liner 100 or the box wrapping paper 140 may include the smoking article moisture control paper.

[0038] When the smoking article package 10 according to an embodiment of the present invention is stored under room temperature conditions, the moisture absorption rate of the smoking articles may be 9% or more and less than 9.5%. For example, the room temperature conditions may be the moisture absorption rate of the smoking articles when the smoking article package 10 is stored under conditions of a temperature of 22° C. and a relative humidity (%) of 55%.

[0039] When the smoking article package is exposed to harsh conditions, the smoking articles are exposed to a moist environment. For example, the harsh conditions may be conditions of a temperature of 30° C. and a relative humidity (%) of 75%.

[0040] However, even after four days have passed since the smoking article package according to one embodiment of the present invention was exposed to harsh conditions, the moisture absorption rate of the smoking article is 9.1% to 13%. That is, the moisture absorption rate of the smoking article is increased by only 0.1% to 4%, preferably by 0.1% to 2.7%, compared to the moisture absorption rate when the smoking article is conditioned under normal temperature conditions (temperature of 22°C and relative humidity (%) of 55%) for four days.

[0041] Meanwhile, when a smoking article package wrapped in a smoking article wrapping material containing general paper is conditioned under severe conditions, the moisture absorption rate of the smoking article is 17% or more, and when conditioned under room temperature conditions, the moisture absorption rate increases by 8% or more. In other words, even after 4 days have passed since the smoking article package according to one embodiment of the present invention was conditioned under severe conditions, the moisture absorption rate of the smoking article can maintain a relatively constant moisture content within the smoking article compared to the case where a smoking article package wrapped in a smoking article wrapping material containing general paper is conditioned under severe conditions.

[0042] The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples. 1. Smoking article packaging design Design of moisture control papers for smoking articles

[0043] The basis weight of the smoking article moisture control paper including the uncoated paper according to one embodiment of the present invention is measured according to KS M ISO 536, the thickness according to KS M ISO 534, and the moisture content according to KS M ISO 287, so that the basis weight of the smoking article moisture control paper is 242 g / m 2 The thickness was 301 μm and the moisture content was 4%. The wet tensile strength, steepness, roughness and gloss of the smoking article moisture control paper are shown in Table 1 below, where the wet tensile strength was measured according to KS M ISO 1924-3, the steepness according to KS M ISO 2493, the gloss according to KS M ISO 8254-1 and the roughness according to KS M ISO 8791-4.

[0044] [Table 1] Working Example

[0045] A smoking article package was produced that included a smoking article and a wrapping material for the smoking article. The smoking article was surrounded by an inner liner and contained within a box wrapper. The inner liner and box wrapper were made of the smoking article moisture control paper that included the uncoated paper. Comparative Example

[0046] The inner liner and the box wrapper were manufactured in the same manner as in the Examples, except that they were manufactured from general paper, which contains 0.5 to 5% of a material such as resin, epichlorohydrin resin, amphoteric starch, or oxidized starch as a wet enhancer, and 0.1 to 2.0% of a material such as alkyl ketene dimer (AKD) as a water resistance agent. 2. Measurement of Cobb sizing degree of moisture control paper for smoking articles

[0047] The Cobb sizing degree of the papers in the above examples and comparative examples was measured using the Cobb measurement method. The Cobb sizing degree was measured under the following conditions based on the Cobb test of 20 seconds.

[0048] Condition 1: Temperature 22°C and relative humidity 40% Condition 2: 22°C temperature and 60% relative humidity The Cobb sizing is shown in Table 2 below.

[0049] [Table 2]

[0050] Under condition 2, the Cobb sizing degree of the paper in the embodiment is 350 cc / m 2 This was 14 times higher than the Cobb sizing degree of the paper in the comparative example. In other words, it can be seen that the moisture absorption capacity of the example was much improved compared to the moisture absorption capacity of the comparative example. 3. Measurement of moisture absorption rate of smoking articles

[0051] Generally, a smoker consumes a pack of smoking articles within two days. Therefore, the above examples and comparative examples were exposed and conditioned under the following conditions 3 and 4, and the moisture absorption rate in the medium part of the smoking article was measured using MT-CA (Brabender model). Conditions 3 and 4 are as follows, respectively.

[0052] Condition 3 (normal temperature condition): After 48 hours of exposure at 22°C and 55% relative humidity, the following conditions were met:

[0053] Condition 4 (acute conditions): After 48 hours of exposure to a temperature of 30°C and a relative humidity of 75%, the specimen was conditioned for the following period:

[0054] The moisture absorption rate was calculated by averaging the results of 60 sticks for each of the above Examples and Comparative Examples, and the results are shown in Table 3 below. The moisture increase rate means the increase in moisture absorption when conditioned after exposure to harsh conditions compared to when conditioned under room temperature conditions.

[0055] [Table 3]

[0056] Under condition 3, the average moisture absorption amount in the smoking article of the embodiment was 9.3%. However, when exposed to condition 4 and then conditioned for 1, 2, 3, and 4 days, the moisture absorption amounts in the smoking article were 9.4%, 9.7%, 10.0%, and 12.0%, respectively. That is, compared to when conditioned under room temperature conditions, the moisture increase rates when exposed to and conditioned under harsh conditions were 0.1%, 0.4%, 0.7%, and 2.7%, respectively.

[0057] On the other hand, the comparative example had a moisture content of 17% when conditioned for 7 days under condition 4, which was an 8.5% increase in moisture content compared to when conditioned under room temperature conditions.

[0058] This demonstrates that the wrapping material for smoking articles of the present invention can maintain the moisture content within the smoking article more uniformly. 4. Comparison of moisture absorption rates of smoking article packaging materials

[0059] Comparing the results of the Examples and Comparative Examples in Table 3, it can be predicted that the use of the wrapping material for smoking articles of the Examples will have an improved moisture absorption rate compared to the wrapping material for smoking articles of the Comparative Examples.

[0060] From the above test results, it is predicted that when a smoking article packaging material is manufactured using the smoking article moisture control paper described in the claims of the present invention, it is possible to provide a smoking article that maintains a uniform moisture content within the smoking article and does not cause heat to the smoker.

[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. [Explanation of symbols]

[0063] 10: Smoking article packaging 100: Inner liner 120: Inner frame 140: Box wrapping paper

Claims

1. 1. A smoking article moisture control paper comprising: Includes uncoated paper with a basis weight of 220 g / m ２ ~260g / m ２ and a thickness of 280 μm to 320 μm.

2. The moisture control paper for smoking articles according to claim 1, wherein the moisture content of the moisture control paper for smoking articles is 3% to 5%.

3. The Cobb sizing degree of the smoking article moisture control paper is 340 cc / m ２ ~360cc / m ２ The moisture control paper for smoking articles according to claim 1 or 2, wherein the moisture content is 100% or more (Cobb test 20 seconds standard).

4. 3. The moisture control paper for smoking articles according to claim 1, wherein the wet tensile strength of the moisture control paper for smoking articles is 2 kN / m or more.

5. 3. The moisture control paper for smoking articles according to claim 1, wherein the steepness of the moisture control paper for smoking articles is 45 gf·cm or more in the MD direction and 25 gf·cm or more in the CD direction.

6. 3. The smoking article moisture control paper according to claim 1, wherein the roughness of the smoking article moisture control paper is 1.4 [mu]m or less.

7. 3. The moisture control paper for smoking articles according to claim 1, wherein the glossiness of the moisture control paper for smoking articles is 40% or more.

8. The moisture control paper for smoking articles according to claim 1 or 2, which is used as a packaging material for smoking articles.

9. A smoking article package including a smoking article and a packaging material for the smoking article, The packaging material for smoking articles includes a smoking article moisture control paper, The smoking article moisture control paper comprises an uncoated paper and has a basis weight of 220 g / m ２ ~260g / m ２ and a thickness of 280 μm to 320 μm.

10. The smoking article package according to claim 9, wherein the moisture absorption rate of the smoking article at a temperature of 22°C and a relative humidity (%) of 55% is 9% or more and less than 9.5%.

11. A smoking article package as described in claim 9 or 10, wherein the moisture absorption rate when the smoking article is conditioned for 4 days under conditions of a temperature of 30°C and a relative humidity (%) of 75% is increased by 0.1% to 4% compared to the moisture absorption rate when the smoking article is conditioned for 4 days under conditions of a temperature of 22°C and a relative humidity (%) of 55%.

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