Wrappers for non-combustion heating type flavor inhalation articles

Abstract

This invention provides a non-combustible, heat-activated flavor-absorbing article that offers excellent handling characteristics after heating. [Solution] Basis weight 40g / m 2 A wrapper for non-combustible, heat-activated flavor-absorbing articles, comprising a base paper containing a filler of the above magnitude and 10% by weight or less.

Description

[Technical Field]

[0001] This invention relates to a wrapper for non-combustion heating type flavor-absorbing articles. [Background technology]

[0002] Flavoring inhalation articles use paper wrappers, and various types of paper with added functions have been proposed. For example, Patent Document 1 describes a paper for reducing visible sidestream smoke from combustible tobacco, specifically containing 12.6 to 17.4% by weight of filler and 30 to 38.2 g / m². 2 Paper having a basis weight is disclosed (Example). Paper for reducing staining in non-combustion heated smoking articles has also been proposed, for example, Patent Document 2 specifically contains 23-50% by weight of filler and has a basis weight of 23-45 g / m². 2 According to Patent Document 3, paper having a basis weight of 26-32% by weight contains filler and has a basis weight of 25-40 g / m². 2 A paper having the following basis weight is disclosed. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Patent No. 2876070 [Patent Document 2] International Publication No. 2020 / 008510 [Patent Document 3] International Publication No. 2016 / 088204 [Overview of the project] [Problems that the invention aims to solve]

[0004] Non-combustion heating type flavor inhalation articles generate an aerosol when the tobacco rod is heated. In this process, the wrapping paper or tip paper of the tobacco rod deteriorates due to the heating, which can result in tearing or breakage of the non-combustion heating type flavor inhalation article, impairing its handling. In view of these circumstances, the object of the present invention is to provide a non-combustion heating type flavor inhalation article that is easy to handle after heating. [Means for solving the problem]

[0005] The inventors found that a wrapper comprising a base paper containing a specific amount of filler and having a specific basis weight solves the aforementioned problem. Appearance 1 Basis weight: 40g / m² 2 A wrapper for non-combustible, heat-activated flavor-absorbing articles, comprising a base paper containing a filler of the above magnitude and 10% by weight or less. Appearance 2 The wrapper according to embodiment 1, wherein the tensile strength in the MD direction is 40 N / 15 mm or more. Appearance 3 A wrapper according to embodiment 1 or 2, having a tensile strength of 20 N / 15 mm or more in the CD direction. Pattern 4 A wrapper according to any one of embodiments 1 to 3, having a thickness of 45 μm or more. Appearance 5 A wrapper according to any one of embodiments 1 to 4, which is a rolled paper or chip paper. Appearance 6 A non-combustion heating type flavor inhalation article comprising a wrapper as described in any of embodiments 1 to 5. Appearance 7 A non-combustion heating type flavor suction article according to embodiment 6, comprising a wrapper according to any one of embodiments 1 to 5 in the portion inserted into a heating device. Appearance 8 The non-combustion heating type flavor inhalation article according to embodiment 7, wherein the portion inserted into the heating device includes a part or all of the tobacco rod, or a joint between the tobacco rod portion and an adjacent member. [Effects of the Invention]

[0006] The present invention can provide a non-combustion heating type flavor attracting article having excellent handling properties after heating.

Brief Description of the Drawings

[0007] [Figure 1] Figure showing one aspect of a non-combustion type flavor attracting article [Figure 2] Figure showing one aspect of a non-combustion type flavor attracting system [Figure 3] Figure showing an outline of a breaking test

Modes for Carrying Out the Invention

[0008] Hereinafter, the present invention will be described in detail. In the present invention, “X to Y” includes the end values X and Y.

[0009] 1. Wrapper (1) Base paper The wrapper according to the present embodiment includes a specific base paper. The base paper is a base material containing pulp and does not include a coating layer. The base paper has a basis weight of 40 g / m 2 or more and contains 10% by weight or less of a filler. The filler is an inorganic filler added to the base paper to impart smoothness, whiteness, opacity, etc. of the paper. The filler is not limited, and examples thereof include calcium carbonate, talc, and clay. Among them, calcium carbonate is preferable from the viewpoint of easy availability.

[0010] When the basis weight of the base paper is within the above range, the strength of the wrapper is improved. However, when the basis weight of the base paper is within this range and the filler content is excessive, the wrapper becomes brittle. Therefore, the inventors have found that when the filler content of the base paper is 10% by weight or less, the toughness of the wrapper can be enhanced. From such a viewpoint, the lower limit of the basis weight of the base paper is preferably 42 g / m 2 or more, more preferably 43 g / m 2 0]or more, still more preferably 45 g / m 2 or more. The upper limit of the basis weight is not limited, but is preferably 60 g / m 2 or less, more preferably 50 g / m 2The following applies: The upper limit of the filler content is preferably 7% by weight or less. The lower limit of the filler content is not limited, but is preferably 2% by weight or more.

[0011] The base paper may contain a combustion inhibitor such as aluminum hydroxide. The amount of combustion inhibitor may be a known amount, but preferably 1 to 10 g / m². 2 It is to that extent.

[0012] (2) Coating layer A known clear coating layer or a pigment coating layer may be provided on the base paper. As the pigment in the pigment coating layer, those known in the papermaking field can be used. Examples include calcium carbonate, titania, clay, and talc. The coating amount is preferably 3 g / m² per side. 2 In addition, a comfortable 4g / m 2 Above, a comfortable 5g / m 2 That concludes the explanation. There is no upper limit to the coating amount, but it is preferably 10 g / m². 2 The following applies:

[0013] The pigment content in the coating layer is not limited, but the lower limit is preferably 5% by weight or more. The upper limit is preferably 50% by weight or less. In addition to the pigment, the coating layer contains known binders, etc.

[0014] (3) Characteristics of a rapper 1)Basic weight The wrapper has a basis weight of 40g / m². 2 While not limited to the above, 45 g / m² is preferred. 2 Above, a comfortable 50g / m 2 That concludes the explanation. There is no upper limit to the basis weight of the wrapper, but it is preferably 80 g / m². 2 The following applies: Basis weight is measured in accordance with JIS P 8124.

[0015] 2) Ash content Ash content is the amount of ashing residue (weight %) relative to the oven-dry weight of the sample, and serves as an indicator of the total amount of filler and pigment in the pigment coating layer. The ash content of the wrapper is not limited, but its lower limit is preferably 1% by weight or more, more preferably 3% by weight or more. Its upper limit is preferably 10% by weight or less, more preferably 7% by weight or less. Ash content is measured in accordance with JIS P 8252.

[0016] 3) Tensile strength The tensile strength of the wrapper in the MD direction is preferably 40 N / 15 mm or more, more preferably 50 N / 15 mm or more, and even more preferably 55 N / 15 mm or more. The tensile strength of the wrapper in the CD direction is preferably 20 N / 15 mm or more, more preferably 25 N / 15 mm or more. The tensile strength is measured in accordance with JIS P8113.

[0017] 4) Thickness The thickness of the wrapper is not limited, but from the viewpoint of strength, it is preferably 45 μm or more, and more preferably 50 μm or more. The upper limit of the wrapper thickness is not limited, but it can be, for example, 70 μm or less. The thickness is measured in accordance with JIS P 8118.

[0018] 5)Application A wrapper is useful as either rolling paper or tip paper. Rolling paper is paper used to directly wrap the filling. Tip paper is paper used to wrap and join multiple components. In particular, the wrapper is preferably rolling paper or tip paper used to wrap components that are heated by a heater in a non-combustion heating type flavor inhalation article. Specifically, the wrapper is preferably rolling paper for a tobacco rod, or tip paper for joining a tobacco rod to other components. Other components include, for example, a support member, a cooling member, or a mouthpiece.

[0019] 2. Non-combustion heating type flavor inhalation articles Figure 1 shows one embodiment of a non-combustible flavor inhalation article. In the figure, 10 is a non-combustible flavor inhalation article, 1 is a tobacco rod, W is a wrapper, 3 is an adjacent member adjacent to the tobacco rod (preferably a cooling member), 5 is a mouthpiece, 52 is a filter, 54 is a center hole filter, 7 is tip paper, and V is ventilation. The embodiment shown in Figure 1 is also called a non-combustible direct heating flavor inhalation article because it heats the tobacco material. Figure (1) shows an embodiment in which the wrapper W is the wrapping paper for the tobacco rod 1, and Figure 1(2) shows an embodiment in which the wrapper W is tip paper that wraps the tobacco rod 1 and the adjacent member 3.

[0020] (1) Tobacco rod A tobacco rod is a roughly cylindrical component used to generate the flavor components contained in tobacco material. A tobacco rod comprises tobacco material and a wrapping paper (wrapper) that wraps around it. The shape of the tobacco material filled in the wrapping paper is not limited and may include, for example, a sheet, or a sheet cut to a width of 0.8 to 1.2 mm, or cut pieces cut to a width of 0.8 to 1.2 mm. The sheet may be gathered, folded, or spiral-shaped without being cut and filled into the wrapping paper to form a tobacco rod. Alternatively, the sheet may be cut into strips and filled into the wrapping paper in a concentric circle or so that the length of the strips is parallel to the length of the tobacco rod to form a tobacco rod.

[0021] The filling density of the tobacco material is not particularly limited, but from the viewpoint of ensuring the characteristics of a non-combustible flavored inhalant and providing a good smoking experience, it is usually 250 mg / cm³. 3 The above is preferable, preferably 320 mg / cm³ 3 That concludes the explanation. Furthermore, the upper limit is typically 800 mg / cm³. 3 The following, preferably 600 mg / cm³ 3 The following applies: The length of the tobacco rod 1 is not limited, but is preferably 15 to 25 mm. Its diameter is also not limited, but is preferably 6 to 8 mm.

[0022] The tobacco material may generate vapor when heated. The heating temperature is not limited but is approximately 250-350°C. To promote aerosol generation, an aerosol source such as glycerin, propylene glycol, or polyols such as 1,3-butanediol may be added to the tobacco material. The amount of aerosol source added is preferably 5-50% by weight, and more preferably 10-30% by weight, relative to the dry weight of the tobacco material. In addition, known flavorings and the like may be added to the tobacco material.

[0023] (2) Adjacent members The adjacent member 3 is a member adjacent to the downstream side of the tobacco rod 1. Downstream refers to the direction toward the mouthpiece end. Examples of adjacent members include a cooling member for cooling the aerosol, a support member for increasing the overall strength of the article, or a mouthpiece, which will be described later. It is preferable that the adjacent member 3 is a cooling member.

[0024] The cooling member is a component that promotes aerosolization by cooling the flavor components and vapor generated in the tobacco rod 1. The cooling member may be a hollow paper tube. Preferably, the paper tube is made of cardboard, which has higher rigidity than rolling paper or chip paper. The paper tube may be provided with ventilation V (openings). Preferably, multiple ventilations are provided along the circumference of the paper tube. In addition, the cooling member may be filled with a gathered sheet to improve heat exchange efficiency. The dimensions of the cooling member are not limited, but preferably the length is 15 to 25 mm and the diameter is 5.5 to 7.5 mm.

[0025] (3) Mouthpiece The mouthpiece is a component that constitutes the mouthpiece end. In one embodiment, the mouthpiece 5 comprises a filter 52 and a center hole filter 54. Known filters can be used for the filter 52 and the center hole filter 54.

[0026] 2. Non-combustion heating type flavor extraction system A combination of a non-combustion heating type flavor inhalation article and a heating device is also called a non-combustion heating type flavor inhalation system. Figure 2 shows one embodiment of this system. In the figure, 100 is the non-combustion type flavor inhalation system, 10 is the non-combustion type flavor inhalation device, and 30 is a heating device equipped with a heater. The heating device includes a heater, a housing, a power supply, etc.

[0027] The heating device 30 comprises a body H1, a heater H2, a metal tube H3, a battery unit H4, and a control unit H5. The body H1 has a cylindrical recess H6, and the heater H2 and metal tube H3 are positioned in a location corresponding to the tobacco rod 1 inserted into this recess. The heater H3 can be an electrical resistance heater, and power is supplied from the battery unit H4 according to instructions from the temperature control unit H5, which heats the heater H2. The heat emitted from the heater H2 is transmitted to the tobacco rod 1 through the metal tube H3, which has high thermal conductivity. In this figure, the heating device 10 is shown heating the tobacco rod 1 from the outside, but it may also heat from the inside. The heating temperature of the heating device 10 is not particularly limited, but is preferably 400°C or less, more preferably 150 to 400°C, and even more preferably 200 to 350°C. The heating temperature refers to the temperature of the heater of the heating device 10.

[0028] In a non-combustion heating type flavor inhalation article, the portion inserted into the heating device 10 preferably includes part or all of the tobacco rod 1, or the joint between the tobacco rod 1 and the adjacent member 3. In this case, the non-combustion heating type flavor inhalation article preferably includes the wrapper W according to this embodiment in the portion inserted into the heating device 10. [Examples]

[0029] [Examples 1-3, Comparative Examples 1-6] The wrappers shown in Table 1 were prepared. Calcium carbonate and kaolin clay were used as fillers, and aluminum hydroxide was used as a pigment.

[0030] [Table 1]

[0031] Each test followed the following guidelines. Basis weight: JIS P 8124 Thickness: JIS P 8118 Tensile strength and elongation: JIS P8113 Breathability: CORESTA RECOMMENDED METHOD N o 40 Opacity: JIS P8149 Whiteness: JIS P8148 Diffusion coefficient: CORESTA RECOMMENDED METHOD N o 77

[0032] A 15mm long paper tube and a 45mm long paper tube were prepared and placed so that their ends were in contact with each other. The area including the joint was wrapped with the wrapper shown in Table 1, and the two paper tubes were joined together to prepare a test specimen. This test specimen was inserted into the heating device shown in Figure 2 and heated at 295°C for 5 minutes. During this time, care was taken to ensure that the joint was heated.

[0033] The heated test specimens were cooled to room temperature and subjected to a fracture test. The test outline is shown in Figure 3. In the figure, P is the plunger, B is the base, and J is the joint. The load at fracture is shown in Table 1. In this test, the strength of the paper tube did not affect the results, allowing for accurate evaluation of the wrapper's properties. As a result, it was revealed that the wrapper of the example had superior strength after heating compared to the wrapper of the comparative example.

[0034] This test specimen is a model of a non-combustible heating type flavor inhalation article shown in Figure 1. Therefore, similar results can be obtained when a non-combustible heating type flavor inhalation article equipped with the aforementioned wrapper is manufactured and tested. [Explanation of Symbols]

[0035] 1 Tobacco Rod 3. Adjacent members, cooling members 5 Mouthpiece 52 filters 54 Center Hole Filter 7 Chip paper V-Ventilation W Rapper 10 Non-combustible flavor inhalation articles 30 Heating devices 100 Non-combustion type flavor inhalation system H1 Body H2 Heater H3 metal tube H4 Battery Unit H5 Control Unit H6 recess H7 ventilation holes P plunger B Base J joint PT paper tube

Claims

1. Basis weight 40 g / m² ２ A wrapper for a non-combustible, heat-activated flavor-absorbing article, comprising a base paper containing a filler of the above magnitude and 10% by weight or less.

2. The wrapper according to claim 1, wherein the tensile strength in the MD direction is 40 N / 15 mm or more.

3. The wrapper according to claim 1 or 2, wherein the tensile strength in the CD direction is 20 N / 15 mm or more.

4. A wrapper according to any one of claims 1 to 3, having a thickness of 45 μm or more.

5. A wrapper according to any one of claims 1 to 4, wherein the wrapper is made of rolled paper or chip paper.

6. A non-combustion heating type flavor-absorbing article comprising a wrapper according to any one of claims 1 to 5.

7. A non-combustion heating type flavor suction article according to claim 6, comprising a wrapper according to any one of claims 1 to 5 in the portion inserted into a heating device.

8. The non-combustion heating type flavor inhalation article according to claim 7, wherein the portion inserted into the heating device includes a part or all of the tobacco rod, or a joint between the tobacco rod portion and an adjacent member.

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