Wrapper for non-combustion-heated flavor inhalation article

Abstract

A wrapper for a non-combustion-heated flavor inhalation article comprising a base paper that has a basis weight of at least 40 g / m2 and contains not more than 10 wt% of a filler.

Description

Wrapper for non-combustion heating flavor inhalation article

[0001] The present invention relates to a wrapper for a non-combustion heating flavor inhalation article.

[0002] Flavor inhalation articles use wrappers made of paper, and papers with various functions have been proposed. For example, Patent Document 1 describes a paper for reducing visible sidestream smoke from combustible cigarettes, specifically containing 12.6 to 17.4 wt % of a filler and having a density of 30 to 38.2 g / m ２ In addition, paper for reducing staining in non-combustion heating smoking articles has also been proposed. For example, Patent Document 2 specifically discloses paper containing 23 to 50% by weight of a filler and having a basis weight of 23 to 45 g / m ２ Patent Document 3 describes a paper having a basis weight of 25 to 40 g / m containing 26 to 32% by weight of filler. ２ A paper having a basis weight of

[0003] Japanese Patent No. 2876070 International Publication No. 2020 / 008510 International Publication No. 2016 / 088204

[0004] Non-combustion heating-type flavor inhalation articles generate aerosols by heating a tobacco rod. During this process, the cigarette paper or tipping paper of the tobacco rod deteriorates due to the heat, which can result in the non-combustion heating-type flavor inhalation article being torn or broken, impairing its handleability. In view of these circumstances, an object of the present invention is to provide a non-combustion heating-type flavor inhalation article that is easy to handle after heating.

[0005] The inventors have found that a wrapper comprising a base paper containing a specific amount of filler and having a specific basis weight solves the above problems. ２A wrapper for a non-combustion heating and inhalation article, comprising a base paper having a tensile strength of 40 N / 15 mm or more and containing 10% by weight or less of a filler. Aspect 2: The wrapper according to Aspect 1, having a tensile strength in the MD direction of 40 N / 15 mm or more. Aspect 3: The wrapper according to Aspect 1 or 2, having a tensile strength in the CD direction of 20 N / 15 mm or more. Aspect 4: The wrapper according to any one of Aspects 1 to 3, having a thickness of 45 μm or more. Aspect 5: The wrapper according to any one of Aspects 1 to 4, which is cigarette paper or tipping paper. Aspect 6: A non-combustion heating and inhalation article comprising the wrapper according to any one of Aspects 1 to 5. Aspect 7: The non-combustion heating and inhalation article according to Aspect 6, having a portion to be inserted into a heating device comprising the wrapper according to any one of Aspects 1 to 5. Aspect 8: The non-combustion heating and inhalation article according to Aspect 7, wherein the portion to be inserted into a heating device comprises a part or all of the tobacco rod, or a joint between the tobacco rod portion and a member adjacent thereto.

[0006] The present invention provides a non-combustion heating type flavor inhalation article that is easy to handle after heating.

[0007] FIG. 1 is a diagram showing an embodiment of a non-burning type burning aroma inhalation article; FIG. 2 is a diagram showing an embodiment of a non-burning type burning aroma inhalation system; and FIG. 3 is a diagram showing an outline of a breaking test.

[0008] The present invention will be described in detail below. In the present invention, "X to Y" includes the extreme values ​​X and Y.

[0009] 1. Wrapper (1) Base Paper The wrapper according to this embodiment comprises a specific base paper. The base paper is a substrate containing pulp and does not include a coating layer. The base paper has a basis weight of 40 g / m2. ２ or more and contains 10% by weight or less of a filler. A filler is an inorganic filler added to base paper to impart smoothness, whiteness, opacity, etc. to the paper. There are no limitations on the filler, but examples include calcium carbonate, talc, and clay. Among these, calcium carbonate is preferred from the viewpoint of availability, etc.

[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, if the filler content is excessive, the wrapper becomes brittle. Therefore, the inventors have found that the toughness of the wrapper can be increased by setting the filler content of the base paper to 10% by weight or less. From this perspective, the lower limit of the basis weight of the base paper is preferably 42 g / m ２ More preferably, 43 g / m ２ More preferably, 45 g / m ２ The upper limit of the basis weight is not limited, but it is preferably 60 g / m ２ or less, more preferably 50 g / m ２ The upper limit of the filler content is preferably 7% by weight or less. There is no lower limit to the filler content, but it is preferably 2% by weight or more.

[0011] The base paper may contain a fire retardant such as aluminum hydroxide. The amount of the fire retardant may be any known amount, but is preferably 1 to 10 g / m ２ That's about it.

[0012] (2) Coating Layer A known clear coating layer or pigment coating layer may be provided on the base paper. Pigments in the pigment coating layer may be those known in the papermaking field. Examples include calcium carbonate, titania, clay, and talc. The coating amount is preferably 3 g / m per side. ２ More preferably, 4 g / m ２ More preferably, 5 g / m ２ The upper limit of the coating amount is not limited, but it is preferably 10 g / m ２ The following is the result.

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

[0014] (3) Characteristics of the wrapper 1) Basis weight The basis weight of the wrapper is 40 g / m ２ There are no particular limitations as long as it is equal to or greater than this, but it is preferably 45 g / m ２ More preferably, 50 g / m ２The upper limit of the basis weight of the wrapper is not limited, but it is preferably 80 g / m ２ The basis weight is measured in accordance with JIS P 8124.

[0015] 2) Ash Content Ash content is the amount of ashed residue (wt%) relative to the bone dry weight of the sample, and is an indicator of the total amount of filler and pigment in the pigment coating layer. There are no limitations on the ash content of the wrapper, but the lower limit is preferably 1 wt% or more, more preferably 3 wt% or more. The upper limit is preferably 10 wt% or less, more preferably 7 wt% 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, and 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, more preferably 50 μm or more. The upper limit of the thickness of the wrapper 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) Uses The wrapper is useful as cigarette paper or tipping paper. Cigarette paper is paper that directly wraps a filler. Tipping paper is paper that wraps and joins multiple components. In particular, the wrapper is preferably cigarette paper or tipping paper that wraps a component that is heated by a heater in a non-combustion heating flavor inhalation article. Specifically, the wrapper is preferably cigarette paper for a tobacco rod or tipping paper for joining a tobacco rod to another component. Examples of other components include a support component, a cooling component, or a mouthpiece.

[0019] 2. Non-Combustion Heating Type Flavor Inhalation Article Figure 1 shows one embodiment of a non-combustion burning flavor inhalation article. In the figure, 10 is a non-combustion 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 tipping paper, and V is ventilation. The embodiment shown in Figure 1 is also called a non-combustion direct heating type flavor inhalation article because it heats the tobacco material. Figure (1) shows an embodiment in which the wrapper W is cigarette paper for the tobacco rod 1, and Figure 1 (2) shows an embodiment in which the wrapper W is tipping paper that wraps the tobacco rod 1 and the adjacent member 3.

[0020] (1) Tobacco Rod A tobacco rod is a substantially cylindrical component for releasing flavor and aroma components contained in tobacco material. A tobacco rod comprises tobacco material and a cigarette paper (wrapper) surrounding the tobacco material. The shape of the tobacco material filled into the cigarette paper is not limited, and examples include a sheet, the sheet cut into widths of 0.8 to 1.2 mm, or shreds cut into widths of 0.8 to 1.2 mm. The sheet may be gathered, folded, or spirally wound without being cut, and then filled into cigarette paper to form a tobacco rod. Alternatively, the sheet may be cut into strips and filled into cigarette paper concentrically or with the longitudinal direction of the strips parallel to the longitudinal direction of the tobacco rod to form a tobacco rod.

[0021] The packing density of the tobacco material is not particularly limited, but from the viewpoint of ensuring the characteristics of the non-combustion flavor inhalation article and imparting a good smoking taste, it is usually 250 mg / cm ３ or more, preferably 320 mg / cm ３ The upper limit is usually 800 mg / cm ３ or less, preferably 600 mg / cm ３ The length of the tobacco rod 1 is not limited, but is preferably 15 to 25 mm. The diameter is also not limited, but is preferably 6 to 8 mm.

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

[0023] (2) Adjacent Member The adjacent member 3 is a member adjacent to the downstream side of the tobacco rod 1. "Downstream" refers to the direction toward the mouth end. Examples of the adjacent member include a cooling member for cooling the aerosol, a support member for increasing the strength of the entire product, or a mouthpiece, which will be described later. The adjacent member 3 is preferably a cooling member.

[0024] The cooling member is a member for promoting aerosolization by cooling flavor and aroma components and vapor generated in the tobacco rod 1. The cooling member may be a hollow paper tube. The paper tube is preferably made of cardboard, which has higher rigidity than cigarette paper or tipping paper. The paper tube may be provided with ventilation V (openings). A plurality of ventilations are preferably provided along the circumference of the paper tube. The cooling member may also be filled with a gathered sheet to improve heat exchange efficiency. The dimensions of the cooling member are not limited, but the length is preferably 15 to 25 mm, and the diameter is preferably 5.5 to 7.5 mm.

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

[0026] 2. Non-combustion heating type flavor inhalation system The 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 a non-combustion heating type flavor inhalation system, 10 is a non-combustion type flavor inhalation implement, and 30 is a heating device equipped with a heater. The heating device is equipped with a heater, a housing, a power source, etc.

[0027] The heating device 30 includes 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 disposed in positions corresponding to the tobacco rod 1 inserted therein. The heater H3 may be an electric resistance heater, and power is supplied from the battery unit H4 in response to instructions from the temperature-controlling control unit H5, causing the heater H2 to heat. The heat generated by the heater H2 is transferred to the tobacco rod 1 through the metal tube H3, which has high thermal conductivity. While the figure shows a heating device 10 that heats the tobacco rod 1 from the outside, 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 in the heating device 10.

[0028] In the non-combustion heating-type flavor inhalation article, the portion inserted into the heating device 10 preferably includes a 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.

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

[0030]

[0031] Each test was performed in accordance with the following: 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 paper tube with a length of 15 mm and a paper tube with a length of 45 mm were prepared and arranged so that their end faces abutted against each other. The area including the joint was wrapped with a wrapper shown in Table 1, and the two paper tubes were joined 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, with the joint being heated during this process.

[0033] After heating, the test pieces were cooled to room temperature and subjected to a breaking test. An overview of the test is shown in Figure 3. In the figure, P is the plunger, B is the base, and J is the joint. The load at break is shown in Table 1. In this test, the strength of the paper tube did not have an effect, so the characteristics of the wrapper could be accurately evaluated. As a result, it was clear that the wrapper of the example had superior strength after heating compared to the wrapper of the comparative example.

[0034] This test piece is a model of the non-combustion heating type flavor inhalation article shown in Figure 1. Therefore, similar results can be obtained when a non-combustion heating type flavor inhalation article having the wrapper is manufactured and tested.

[0035] REFERENCE SIGNS LIST 1 tobacco rod 3 adjacent member, cooling member 5 mouthpiece 52 filter 54 center hole filter 7 tipping paper V ventilation W wrapper 10 non-burning flavor inhalation article 30 heating device 100 non-burning flavor inhalation system H1 body H2 heater H3 metal tube H4 battery unit H5 control unit H6 recess H7 ventilation hole P plunger B base J joint PT paper tube

Claims

1. Basis weight: 40 g / m ２ The wrapper for a non-combustion heating type flavor inhalation article comprises a base paper having the above composition and containing 10% by weight or less of a filler.

2. 2. The wrapper of claim 1, having a tensile strength in the MD direction of 40 N / 15 mm or greater.

3. 2. The wrapper of claim 1 having a CD tensile strength of at least 20 N / 15 mm.

4. The wrapper of claim 1 having a thickness of 45 μm or greater.

5. 10. The wrapper of claim 1 which is a wrapping paper or tipping paper.

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

7. The non-combustion heating type flavor inhalation article according to claim 6, comprising a wrapper according to any one of claims 1 to 5 at a portion to be 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 the whole of the tobacco rod, or a joint between the tobacco rod and an adjacent member.