Method of manufacturing a heated smoking article

Abstract

A manufacturing method of a smoking article, which has at least a tobacco rod, a cooling section, and a filter tip section as components, and a component L having a lower rigidity and a component H having a higher rigidity are adjacent to each other, wherein the manufacturing method comprises: (A) a step of applying an adhesive to one face of a plug wrap in such a manner that a portion having a larger amount of the adhesive per unit area and a portion having a smaller amount of the adhesive per unit area are formed, in which step the portion having the larger amount of the adhesive is provided in a region in which the component L is wrapped, and (B) a step of preparing a composite section having at least the tobacco rod, the cooling section, and the filter tip section, and wrapping the composite section with the plug wrap.

Description

[0001] This application is a divisional application of the invention patent application filed on September 13, 2019, with application number 201980064440.4 and titled "Method for Manufacturing Heated Smoking Article". Technical Field

[0002] The present invention relates to a method for manufacturing a heated smoking article. Background Art

[0003] Heated smoking articles that do not involve combustion, such as electrically heated tobacco, are being studied. For example, Patent Document 1 discloses a heated smoking article provided with a paper tube adjacent to a tobacco rod.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: International Publication No. 2017 / 198838 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] Unlike general combustion-type smoking articles, heated smoking articles are provided with members having different properties such as rigidity. Therefore, if the heated smoking article is manufactured by uniformly applying an adhesive to the tipping paper, defects such as so-called neck dropout in which a part of the member falls off, and wrinkles in the product will occur. In particular, when a heated tobacco rod falls off, a safety problem also arises. In view of such circumstances, an object of the present invention is to provide a method for manufacturing a heated smoking article with reduced occurrence of neck dropout and wrinkles.

[0009] Means for Solving the Problems

[0010] The present inventors have solved the above problem by optimizing the amount of adhesive in a specific region of the tipping paper. That is, the above problem is solved by the present invention described below.

[0011] (Mode 1)

[0012] A method for manufacturing a smoking article, the smoking article at least comprising a tobacco rod, a cooling section, and a filter section as members, wherein a member L with lower rigidity is adjacent to a member H with higher rigidity, and the manufacturing method comprises:

[0013] (A) a step of disposing an adhesive on one surface of tipping paper in such a manner that a portion with a larger cured adhesive weight per unit area and a portion with a smaller cured adhesive weight are formed,

[0014] in this step, the portion with a larger adhesive weight is provided in the region wrapping the member L, and

[0015] (B) The process of preparing the composite section and wrapping the composite section with the mouthpiece paper, wherein the composite section comprises at least the tobacco rod, the cooling section, and the filter section.

[0016] (Method 2)

[0017] According to the manufacturing method described in Method 1, the weight of the adhesive in the portion with a larger adhesive weight is 1.5 to 3 times the weight of the adhesive in the portion with a smaller adhesive weight.

[0018] (Method 3)

[0019] According to the manufacturing method described in Method 1 or 2, in step (A), a portion of the adhesive with a larger weight is placed in an area starting from the contact surface between component L and component H and ending at a position 20 to 40% along the length of component L.

[0020] (Method 4)

[0021] According to the manufacturing method described in any of methods 1 to 3, when the area of ​​the foremost part of the mouthpiece paper located on the side opposite to the mouthpiece end is defined as the foremost part of the mouthpiece paper when it is rolled with the mouthpiece paper,

[0022] In the process (A), a non-adhesive portion is provided on the front end portion.

[0023] (Method 5)

[0024] According to the manufacturing method described in any one of methods 1 to 4, in step (A), a non-adhesive portion is provided in the area of ​​the wrapping cooling section or the filter section of the mouthpiece paper.

[0025] (Method 6)

[0026] According to the manufacturing method described in any of methods 1 to 5, the composite section in step (B) is a double-length composite section formed by arranging a pair of composite sections in such a way that the end faces of the filter section abut against each other.

[0027] (Method 7)

[0028] According to the manufacturing method described in Method 6, a non-adhesive portion is provided near the area enclosing the abutment portion.

[0029] (Method 8)

[0030] The manufacturing method described in Method 5 further includes a step of setting an opening in the non-adhesive portion.

[0031] (Method 9)

[0032] The manufacturing method described in method 5 or 8 further includes a step of printing on the non-adhesive portion.

[0033] (Method 10)

[0034] According to the manufacturing method described in any one of methods 1 to 9, the diameter of component L is greater than the diameter of component H.

[0035] (Method 11)

[0036] According to the manufacturing method described in Method 10, the diameter of component L is 0.05 to 0.15 mm larger than the diameter of component H.

[0037] (Method 12)

[0038] According to the manufacturing method described in Method 10, the diameter of component L is 0.5 to 2.5% larger than the diameter of component H.

[0039] (Method 13)

[0040] A smoking article, as a component, includes at least a tobacco stem, a cooling section that abuts against the tobacco stem, a filter section, and a mouthpiece paper covering them.

[0041] The component L with lower rigidity is adjacent to the component H with higher rigidity, wherein,

[0042] The cigarette holder paper has a portion with a larger weight of cured adhesive per unit area and a portion with a smaller weight.

[0043] The area of ​​the wrapping component L of the cigarette holder paper has a portion with a greater weight of the adhesive.

[0044] (Method 14)

[0045] According to the smoking article described in method 13, the adhesive weight in the portion with a larger adhesive weight is 1.5 to 3 times the adhesive weight in the portion with a smaller adhesive weight.

[0046] (Method 15)

[0047] According to the smoking article described in method 13 or 14, the mouthpiece paper has a non-adhesive portion in the area covering the cooling section.

[0048] (Method 16)

[0049] According to any of the methods 13 to 15, the cigarette holder paper has a non-adhesive portion in the area covering the filter section.

[0050] (Method 17)

[0051] According to the manufacturing method described in any of methods 1 to 12, the component L is a cooling section.

[0052] (Method 18)

[0053] According to the manufacturing method described in any one of methods 1 to 12 or 17, the component H is a filter section.

[0054] (Method 19)

[0055] A method for manufacturing a smoking article, the smoking article comprising at least a tobacco rod, a cooling section, and a filter section, wherein the manufacturing method comprises:

[0056] (A') A process of preparing adhesive on one side of a cigarette holder paper in such a way that it forms a portion with a larger weight of cured adhesive per unit area and a portion with a smaller weight.

[0057] In this process, a portion of the adhesive with a higher weight is placed in the area where the tobacco stem is wrapped, and

[0058] (B') The process of preparing the composite section and wrapping the composite section with the mouthpiece paper, wherein the composite section comprises at least the tobacco rod, the cooling section, and the filter section.

[0059] (Method 20)

[0060] According to the manufacturing method described in Method 19, the weight of the adhesive in the portion with a larger adhesive weight is 1.5 to 3 times the weight of the adhesive in the portion with a smaller adhesive weight.

[0061] (Method 21)

[0062] According to the manufacturing method described in method 19 or 20, in step (A'), a portion of the adhesive with a larger weight is placed in an area that starts from the contact surface between the tobacco rod and the adjacent component and ends at a position of 20 to 40% along the length of the tobacco rod.

[0063] (Method 22)

[0064] According to the manufacturing method described in any of methods 19 to 21, the smoking article has a tobacco stem at its foremost end.

[0065] When the area of ​​the mouthpiece paper located at the very front of the tobacco stem is defined as the front end of the mouthpiece paper when the mouthpiece paper is rolled up,

[0066] In the process (A'), a non-adhesive portion is provided on the front end portion.

[0067] (Method 23)

[0068] According to the manufacturing method described in any of methods 19 to 22, in step (A'), a non-adhesive portion is provided in the area enclosing the cooling section.

[0069] (Method 24)

[0070] According to the manufacturing method described in any of methods 19 to 23, the composite section in step (B') is a double-length composite section formed by arranging a pair of composite sections such that the end faces of the filter section abut against each other.

[0071] (Method 25)

[0072] According to the manufacturing method described in Method 24, a non-adhesive portion is provided near the area enclosing the abutment portion.

[0073] (Method 26)

[0074] The manufacturing method described in Method 23 further includes a step of setting an opening in the non-adhesive portion.

[0075] (Method 27)

[0076] The manufacturing method described in method 23 or 26 further includes a step of printing on the non-adhesive portion.

[0077] (Method 28)

[0078] According to the manufacturing method described in any of methods 19 to 27, the diameter of the tobacco rod is larger than the diameter of the adjacent component.

[0079] (Method 29)

[0080] According to the manufacturing method described in Method 28, the diameter of the tobacco rod is 0.05 to 0.15 mm larger than the diameter of the adjacent component.

[0081] (Method 30)

[0082] According to the manufacturing method described in Method 28, the diameter of the tobacco rod is 0.5 to 2.5% larger than the diameter of the adjacent section.

[0083] (Method 31)

[0084] According to the manufacturing method described in any of methods 19 to 30, the rigidity of the component adjacent to the tobacco rod is greater than the rigidity of the tobacco rod.

[0085] (Method 32)

[0086] According to any one of claims 19 to 31, the component adjacent to the tobacco rod is a cooling section or a support section.

[0087] (Method 33)

[0088] A smoking article, as a component, includes at least a tobacco stem, a cooling section, a filter section, and a mouthpiece paper covering them, wherein,

[0089] The cigarette holder paper has a portion with a higher and a lower weight of cured adhesive per unit area.

[0090] The area where the cigarette holder paper wraps around the tobacco stick has a larger portion of the adhesive weight.

[0091] (Method 34)

[0092] According to the smoking article described in method 33, the weight of the adhesive in the portion with a larger adhesive weight is 1.5 to 3 times the weight of the adhesive in the portion with a smaller adhesive weight.

[0093] (Method 35)

[0094] According to the smoking article described in method 33 or 34, the mouthpiece paper has a non-adhesive portion in the area covering the cooling section.

[0095] (Method 36)

[0096] According to any of the methods 32 to 35, the cigarette holder paper has a non-adhesive portion in the area covering the filter section.

[0097] (Method 37)

[0098] According to any of the methods 33 to 36, the part adjacent to the tobacco rod is a cooling section or a support section.

[0099] (Method a1)

[0100] A method for manufacturing a smoking article, comprising at least a tobacco rod, a cooling section, and a filter section.

[0101] The component L with lower rigidity is adjacent to the component H with higher rigidity, wherein,

[0102] The component L is a component other than the tobacco stick.

[0103] The manufacturing method comprises:

[0104] (A”) A process of preparing adhesive on one side of a cigarette holder paper in such a way that it forms a portion with a larger weight of cured adhesive per unit area and a portion with a smaller weight.

[0105] In this process, a portion of the adhesive with a higher weight is placed in the area of ​​the wrapped component L, and

[0106] (B”) The process of preparing the composite section and wrapping the composite section with the mouthpiece paper, wherein the composite section comprises at least the tobacco rod, the cooling section, and the filter section.

[0107] (Method a2)

[0108] According to the manufacturing method described in method a1, the weight of the adhesive in the portion with a larger adhesive weight is 1.5 to 3 times the weight of the adhesive in the portion with a smaller adhesive weight.

[0109] (Method a3)

[0110] According to the manufacturing method described in method a1 or a2, in the step (A”), a portion of the adhesive with a larger weight is placed in an area starting from the contact surface between component L and component H and ending at a position 20 to 40% along the length of component L.

[0111] (Method a4)

[0112] According to the manufacturing method described in any one of methods a1 to a3, the smoking article has a tobacco stem at its foremost end.

[0113] When the area of ​​the mouthpiece paper located at the very front of the tobacco stem is defined as the front end of the mouthpiece paper when the mouthpiece paper is rolled up,

[0114] In the process (A”), a non-adhesive portion is provided on the front end portion.

[0115] (Method a5)

[0116] According to the manufacturing method described in any one of methods a1 to a4, in the step (A”), a non-adhesive portion is provided in the area of ​​the wrapping cooling section or the filter section of the mouthpiece paper.

[0117] (Method a6)

[0118] According to the manufacturing method described in any one of methods a1 to a5, the composite section in step (B”) is a double-length composite section formed by arranging a pair of composite sections in such a way that the end faces of the filter section abut against each other.

[0119] (Method a7)

[0120] According to the manufacturing method described in method a6, a non-adhesive portion is provided near the area enclosing the abutment portion.

[0121] (Method a8)

[0122] The manufacturing method described in method a5 also includes a step of setting an opening in the non-adhesive portion.

[0123] (Method a9)

[0124] The manufacturing method described in method a5 or a8 further includes a step of printing on the non-adhesive portion.

[0125] (Method a10)

[0126] According to the manufacturing method described in any one of methods a1 to a9, the diameter of component L is greater than the diameter of component H.

[0127] (Method a11)

[0128] According to the manufacturing method described in method a10, the diameter of component L is 0.05 to 0.15 mm larger than the diameter of component H.

[0129] (Method a12)

[0130] According to the manufacturing method described in method a10, the diameter of component L is 0.5 to 2.5% larger than the diameter of component H.

[0131] (Method a13)

[0132] A smoking article, as a component, includes at least a tobacco stem, a cooling section, a filter section, and a mouthpiece paper covering them.

[0133] A component L with lower rigidity (where L is a component other than the tobacco stick) is adjacent to a component H with higher rigidity.

[0134] The cigarette holder paper has a portion with a larger weight of cured adhesive per unit area and a portion with a smaller weight.

[0135] The area of ​​the wrapping component L of the cigarette holder paper has a portion with a greater weight of the adhesive.

[0136] (Method a14)

[0137] According to the smoking article described in method a13, the weight of the adhesive in the portion with a larger adhesive weight is 1.5 to 3 times the weight of the adhesive in the portion with a smaller adhesive weight.

[0138] (Method a15)

[0139] According to the smoking article described in method a13 or a14, the mouthpiece paper has a non-adhesive portion in the area covering the cooling section.

[0140] (Method a16)

[0141] According to any one of methods a13 to a15, the cigarette holder paper has a non-adhesive portion in the area covering the filter section.

[0142] (Method a17)

[0143] According to the manufacturing method described in any one of methods a1 to a12, the component L is a cooling section.

[0144] (Method a18)

[0145] According to the manufacturing method described in any one of methods a1 to a12 or a17, the component H is a filter section.

[0146] Invention Effects

[0147] This invention provides a method for manufacturing heated smoking articles that reduces neck slippage and wrinkles. Attached Figure Description

[0148] Figure 1 This is a diagram illustrating one method of using a heated smoking article.

[0149] Figure 2 This is a diagram showing one way of representing a cigarette holder paper.

[0150] Figure 3 This is a diagram showing another way of representing cigarette holder paper.

[0151] Figure 4 This is an explanatory diagram of the process of preparing adhesive using rollers.

[0152] Figure 5 This is a schematic diagram of a cigarette holder paper with adhesive applied using rollers.

[0153] Figure 6 This is a schematic diagram of a cigarette holder paper containing adhesive being ejected through a nozzle.

[0154] Figure 7 This is a diagram illustrating the method for measuring stiffness.

[0155] Figure 8 This is a diagram showing one method of using an apparatus to perform process (B).

[0156] Figure 9 This is a diagram representing one way of doing process (B).

[0157] Figure 10 This is a diagram representing one way of doing process (B).

[0158] Figure 11 This is a diagram illustrating an embodiment.

[0159] Figure 12 This is a diagram illustrating one method of using a second type of heated smoking article.

[0160] Figure 13 This is a diagram showing one way of representing a cigarette holder paper.

[0161] Figure 14 This is a diagram showing another way of representing cigarette holder paper. Detailed Implementation

[0162] The inventors have discovered that in smoking articles with a sequence of adjacent parts of lower rigidity and higher rigidity, increasing the amount of adhesive in the area of ​​the mouthpiece paper covering the lower rigidity part can suppress the neck of the lower rigidity part from detaching. Furthermore, the inventors have found that, from a safety perspective, it is necessary to reliably prevent the tobacco stem from detaching, and increasing the amount of adhesive in the area of ​​the mouthpiece paper covering the tobacco stem is useful regardless of the rigidity of the tobacco stem. The present invention will now be described in detail. In this invention, "X~Y" includes X and Y as its endpoints.

[0163] I. First Method

[0164] 1. First type of heated smoking item

[0165] The first heated smoking article of the present invention (hereinafter also simply referred to as the "first smoking article") includes at least a tobacco rod, a cooling section, and a filter section, and has a sequence in which a component of lower rigidity L is adjacent to a component of higher rigidity H. The first heated smoking article may include a configuration where the tobacco rod, as the component of lower rigidity L, is adjacent to the component of higher rigidity H, i.e., other components (e.g., the cooling section), or it may not include this configuration. The configuration where the tobacco rod, as component L, is adjacent to the component of higher rigidity H (e.g., the cooling section) is included in the second heated smoking article of the present invention, and will therefore be described in the next section, and will be omitted in the description of the first heated smoking article.

[0166] Figure 1 (i) illustrates one embodiment of a first smoking article. In the figure, 100 is the smoking article, 1 is the tobacco rod, 3 is the cooling section, 5 is the filter section, 7 is the mouthpiece paper, and 1b is the adhesive increment. In this embodiment, the cooling section 3 corresponds to the component L with lower rigidity, and the filter section 5 corresponds to the component H with higher rigidity. A specific combination of such components L and H could be, for example, a combination of a cooling section comprising a polymer sheet such as polylactic acid and a filter section filled with cellulose acetate fibers. The polymer sheet can also be pleated or rolled. In this embodiment, the tobacco rod 1 and the cooling section 3 can also be additionally rolled with mouthpiece paper.

[0167] Figure 1(ii) Another embodiment of the first smoking article is shown. In this embodiment, the tobacco rod 1 corresponds to component H, and the cooling section 3 corresponds to component L. A specific combination of such components H and L could be, for example, a combination of a tobacco rod highly filled with tobacco material such as tobacco shreds and a cooling section containing a polymer sheet such as polylactic acid. The polymer sheet may also be pleated or rolled.

[0168] The diameter of component L is preferably larger than the diameter of component H. This is because it helps to suppress deformation of component L. The diameter of component L is preferably 0.05 to 0.15 mm larger than the diameter of component H. Furthermore, the diameter of component L is preferably 0.5 to 2.5% larger than the diameter of component H, more preferably 1.0 to 2.0%. While components L and H can be selected from the tobacco stem, cooling section, filter section, or other components, it is preferred that at least one of components L and H is selected from the tobacco stem, cooling section, or filter section.

[0169] (1) Tobacco stick

[0170] A tobacco stick is a roughly cylindrical component used to produce the aroma components contained in tobacco raw materials, and includes a rolling paper for wrapping the tobacco filling material and its surroundings. There are no limitations on the tobacco filling material; for example, shredded tobacco or tobacco sheets can be used. Specifically, dried tobacco leaves shredded into pieces 0.8–1.2 mm wide can be used to fill the rolling paper. Alternatively, dried tobacco leaves can be pulverized and homogenized into particles with an average diameter of approximately 20–200 μm, processed into sheets, and then shredded into pieces 0.8–1.2 mm wide before filling the rolling paper. The sheets can also be pleated, folded, or swirled before filling the rolling paper without shredding them. The sheets can also be cut into rectangles and filled into the rolling paper in concentric circles or with the length of the rectangle parallel to the length of the tobacco stick.

[0171] The tobacco stick can also generate aerosols when heated. To promote aerosol generation, it is preferable to add aerosol sources such as glycerol, propylene glycol, and 1,3-butanediol to the tobacco filling material. The amount of aerosol source added is preferably 5-50% by weight relative to the dry weight of the tobacco filling material, more preferably 10-30% by weight. In addition, the tobacco stick may also contain flavorings such as menthol. The length of the tobacco stick is not limited, but is preferably 15-25 mm. Its diameter is also not limited, but is preferably 6.5-7.5 mm. However, when the rigidity of the adjacent component is higher than that of the tobacco stick, it is preferable that the diameter of the tobacco stick is larger than the diameter of the adjacent component. This is because it can reduce the deformation of the tobacco stick. Therefore, in this case, the diameter of the tobacco stick is preferably 0.5-2.5% larger than the diameter of the adjacent component, more preferably 1.0-2.0%. In practical dimensions, the diameter of the tobacco stick is preferably about 0.05-0.15 mm larger than the diameter of the adjacent component.

[0172] In this invention, "rigidity," as disclosed in Japanese Patent Application Publication No. 2016-523565, paragraphs 0010-0014, means the resistance to deformation of a component. For example, rigidity can be determined based on the change in diameter before and after applying a load F to the side of a tobacco stick. Figure 7 In this context, if the diameter of the tobacco rod before the applied load F is denoted as Ds, and the diameter after the applied load is denoted as Dd, the downward pressure is d = Ds - Dd, and the rigidity is defined by the following formula. The same applies to other components.

[0173] Stiffness (%) = Dd / Ds × 100

[0174] (2) Cooling section

[0175] The cooling section is a component used to cool the aroma components and aerosols generated in the tobacco stick 1. The cooling section 3 can also be a hollow paper tube. The paper tube is preferably made of cardboard with higher rigidity than the rolling paper and mouthpiece paper. Openings (ventilation sections) can also be provided in this paper tube. It is preferable that multiple openings are provided along the circumference of the paper tube. From the point of view of work efficiency, it is preferable that the openings are provided by laser processing of the finished smoking article. In addition, in order to improve heat exchange efficiency, a pleated film can also be filled in the cooling section 3. This film can also be a polymer sheet such as polylactic acid. The size of the cooling section 3 is not limited, but the length is preferably 15 to 25 mm and the diameter is preferably 5.5 to 7.5 mm. However, when the rigidity of the component adjacent to the cooling section 3 is lower than that of the cooling section 3, the diameter of the cooling section 3 is preferably 0.5 to 2.5% smaller than the diameter of the adjacent component, and more preferably 1.0 to 2.0% smaller. Generally, when the cooling section 3 has a paper tube made of cardboard, the rigidity of this section is higher than that of the tobacco stick 1. However, as mentioned earlier, when the cooling section 3 is made of polymer sheets such as polylactic acid and is rolled up with a common wrapping material, the rigidity of this section may be lower than that of the tobacco stick 1.

[0176] (3) Filter section

[0177] The filter tip section is a component equipped with a filter tip. Known filter tip components such as acetate filters and filter paper can be used as the filter tip. Filter paper is a paper-filled filter tip prepared by processing paper with a crease roller or similar tool to create pleats, and then rolling the paper up with a filter rod. Acetate filters are filter tips filled with cellulose acetate fibers. The filter tip section 5 is preferably composed of multiple components, and more preferably includes a filter tip 51 and a central hole component 53. Figure 1 (iii)). As a central hole component, for example, a hole formed by a space in the center of an acetate filter can be used. The length of the filter segment 5 is not limited, but is preferably 10 to 20 mm. When the central hole component and the acetate filter are arranged as filter segments, their order is not limited. Alternatively, each component may be rolled with filter paper (the inner wrapping material of the filter) and connected with filter forming paper (the outer wrapping material of the filter). The diameter of the filter segment is not limited, but it is preferable to have a diameter approximately the same as that of other segments besides the tobacco stem. This is because it can suppress the formation of tears and wrinkles in the filter paper.

[0178] (4) Cigarette mouthpiece paper

[0179] Cigarette mouthpiece paper refers to paper used to connect two or more components such as a tobacco rod, cooling section, and filter section. On the other hand, roll paper refers to paper used to roll up the various components that make up the tobacco rod, cooling section, or filter section. For example, as mentioned earlier, when the filter section has a center hole component and an acetate filter, the paper for rolling the center hole component and the paper for rolling the acetate filter are respectively roll paper.

[0180] The base paper used for cigarette holder paper and toilet paper is not limited, and base paper using cellulose fibers can be listed. Such cellulose fibers can be any type of cellulose fiber derived from plants, chemically synthesized cellulose fibers, or a mixture thereof. Plant-derived fibers can include pulps such as flax fiber, wood fiber, and seed fiber, and can also be unbleached colored unbleached pulp. However, to achieve a clean, white appearance, sun-dried pulp bleached using oxidizing agents, reducing agents, or other bleaching agents is preferred.

[0181] In the case of conventional cigarette paper, alkali metal salts such as citrate are used as common combustion modifiers (combustion improvers, etc.) that can affect the natural burning rate of the paper. In this invention, it is preferable to use a heated smoking article rather than a combustible one, in which case, since there is no need to burn the paper, the paper may not contain a combustion modifier.

[0182] The preferred lower limit for the basis weight of toilet paper is 30 g / m³. 2 Of the above, 35g / m² is preferred. 2 The above is further preferred to be 40g / m 2 The above. The preferred upper limit is 65g / m³. 2 The preferred value is 50g / m 2 The following is a further explanation. Additionally, the preferred lower limit for the basis weight of the cigarette holder paper is 20 g / m². 2 Of the above, 25g / m² is more preferred. 2 The above is further preferred to be 30g / m 2 The above. The preferred upper limit is 50g / m³. 2 The preferred value is 45g / m 2 The following is a further preferred value: 40g / m 2 The following is a description of the weight, which can be determined according to the method specified in JIS P8124.

[0183] (5) Other components

[0184] The smoking article of the present invention may also include components other than those described above. Examples of such other components include a support section. A support section refers to a component that increases the strength of the smoking article, or a component positioned downstream of the tobacco stem to suppress displacement of the tobacco filling material; for example, the aforementioned center hole component can be used. When a center hole component is used as a support section, its dimensions are not limited, but a length of 5 to 10 mm and a diameter of 5 to 8 mm are preferred.

[0185] 2. First manufacturing method

[0186] Figure 2 The figure shows an outline of the first manufacturing method. In the figure, 90 is the composite section of the smoking article before it is wrapped, O is the contact portion between the tobacco rod 1 and the cooling section 3, Y is the contact portion between the cooling section 3 (part L) and the filter section 5 (part H), 7 is the mouthpiece paper used to wrap the composite section 90, b is the portion with less adhesive weight per unit area after curing (hereinafter also referred to as "adhesive portion"), 1b is the portion with more adhesive weight per unit area after curing (hereinafter also referred to as "adhesive increment portion"), 1n is the non-adhesive portion in the front end area of ​​the mouthpiece paper 7, 3n is the non-adhesive portion in the area wrapping the filter section, and P is the circumferential length of the mouthpiece paper 7. Figure 2 (2) is a diagram showing the presence of multiple adhesive increments 1b, etc., where s1~s2, t1~t2, u, and v represent dimensions. In this diagram, the front end region of the mouthpiece paper 7 refers to the region of the mouthpiece paper located at the very front end in the opposite direction to the mouthpiece end. Figure 3 The diagram illustrates how a double-length composite section 90w is wrapped, having twice the length of the composite section 90. In the figure, 7w is the double-length mouthpiece paper used to wrap the double-length composite section 90w, Z is the center portion of the double-length filter section 5w along its length, and the other numbers correspond to... Figure 2 The same definition. In Figure 2 , 3 In this context, for convenience, the vertical direction of the paper surface in cigarette holder paper is referred to as the circumferential direction, and the horizontal direction is referred to as the length direction. (See below for reference.) Figure 2 The manufacturing method of the present invention will be described.

[0187] (1) Process A

[0188] In this process, adhesive is applied to one side of the mouthpiece paper 7. The method of applying the adhesive is not limited, and methods such as coating the mouthpiece paper 7 with adhesive, pre-preparing an adhesive sheet and laminating the adhesive sheet onto the mouthpiece paper 7 can be used. Examples include applying adhesive to the surface of a roller and transferring it to the mouthpiece paper 7, and discharging adhesive from a nozzle onto the mouthpiece paper 7.

[0189] Figure 4 An example of a method for applying adhesive to the surface of a roller and transferring it to a cigarette holder paper 7 is shown. 88 is a pattern roller with recesses on its surface for holding the adhesive in a desired pattern; 89 is a transfer roller for transferring the adhesive held on the pattern roller 88; and 85 is a counter roller. The adhesive is transferred from the recesses of the pattern roller 88 to the transfer roller 89, and then from the transfer roller 89 to the cigarette holder paper 7. At this time, if the counter roller 85 is provided, the amount of adhesive applied (transfer amount) is stable. Furthermore, as... Figure 4 (2) As shown, if a folding roller 87 is provided, the coating amount is more stable. In addition, if the amount of adhesive is too large, the cigarette holder paper 7 is difficult to leave the transfer roller 89, and the position where the two leave becomes unstable. However, if a second counter-pressure roller 86 is provided, the cigarette holder paper 7 can be given appropriate tension, thus stabilizing the position. Figure 5 An example of a cigarette holder paper 7 with adhesive configured by this method is shown. Figure 5 In the process, a clear height difference can be seen at the boundary between the adhesive increment portion 1b and the adhesive portion b, but this height difference may not exist, and instead a gentle slope is formed from the adhesive increment portion 1b to the adhesive portion b.

[0190] Figure 6 An example of a cigarette holder paper 7 with adhesive dots is shown, obtained by discharging adhesive from a nozzle onto the cigarette holder paper 7. For example, it can be obtained by discharging adhesive from a nozzle onto the cigarette holder paper 7. Figure 6 (1) The adhesive increment portion 1b is formed by increasing the density of adhesive dots in that manner. Additionally, it is possible to achieve this by, for example... Figure 6 (2) The adhesive increment 1b is formed by increasing the diameter of the adhesive dot. The diameter of the adhesive dot refers to the diameter of the circle formed on the surface of the mouthpiece paper 7. Alternatively, it can be achieved by increasing the diameter of the adhesive dot as follows: Figure 6 (3) Increase the height of the adhesive points in that way (refer to...) Figure 6 (3) As shown in the figure below) to form adhesive increment portion 1b. Multiple of them can also be combined to form adhesive increment portion 1b.

[0191] As an adhesive, known adhesives can be used, but vinyl acetate-based adhesives are preferred. "After curing" refers to the cured state after solvent removal in solvent-containing adhesives, and to the cross-linked state in solvent-free cross-linking adhesives. Furthermore, the weight of the cured adhesive per unit area is also simply referred to as "adhesive weight".

[0192] Adhesive portion b refers to the portion other than adhesive increment portion 1b within the adhesive-containing portion. The adhesive weight of adhesive portion b can be adjusted appropriately, but is preferably 0.005 to 0.015 mg / mm². 2The thickness of the adhesive layer in the adhesive portion b, in the uncured state, is preferably set to about 0.01 to 0.03 mm. The uncured state refers to the state before the adhesive cures. In this invention, the weight of the adhesive in the adhesive increment portion 1b is greater than the weight of the adhesive in the adhesive portion b. Generally, increasing the adhesive weight increases the adhesive strength, but the product is prone to wrinkling. In this invention, since only the adhesive weight of the adhesive increment portion 1b is increased, it is possible to prevent the neck of component L from detaching and to prevent wrinkling in other parts. From this perspective, the ratio of the adhesive weight in the adhesive increment portion 1b (1b weight) to the adhesive weight of the adhesive portion b (b weight) is preferably 1.5 to 3.0, more preferably 1.7 to 2.7. The 1b weight is the average value of the adhesive weight in the adhesive increment portion 1b. In the case of multiple portions with different adhesive weights, the 1b weight is defined as the average adhesive weight of the portion with the largest adhesive weight, and the b weight is defined as the average adhesive weight in the adhesive portions b other than the adhesive increment portion 1b.

[0193] While increasing the area of ​​the adhesive increment 1b makes it less likely to experience defects such as neck detachment, cost considerations mean that the adhesive increment 1b does not need to be the entire surface of component L. Preferably, the adhesive increment 1b is located at the interface between component L and component H. Figure 2 (1) The region starting from Y) and ending at a position of 20-40% along the length of the cooling section 3. That is, the adhesive increment 1b preferably exists in the region starting from Y). Figure 2 The region starting from point Y and ending at 0.2Y to 0.4Y. The adhesive increment 1b is as follows. Figure 2 As shown, there can be two or one strong adhesive portion 1b in the circumferential direction. Figure 2 (2) is preferably 70-90% of the circumferential length P of the mouthpiece paper 7. When there are two adhesive increment portions 1b in the circumferential direction, the distance s2 from the circumferential end to the adhesive increment portion 1b is preferably 2-5% of P. The separation distance s3 between the two can be adjusted appropriately according to s1 and s2.

[0194] The mouthpiece paper 7 preferably has a non-adhesive portion 1n at its front end. In the case of a rolled mouthpiece paper, the front end refers to the area of ​​the mouthpiece paper located at the very frontmost point on the side opposite to the mouthpiece end. This is to prevent adhesive from seeping out from the front end of the mouthpiece paper 7 during wrapping. The length u of the non-adhesive portion 1n in the longitudinal direction of the mouthpiece paper 7 is preferably 0.1 to 1.0 mm.

[0195] Preferably, the cigarette holder paper 7 has a non-adhesive portion 3n in the area wrapping the cooling section 3 or the filter section 5. If the non-adhesive portion 3n is provided, ventilation portions are provided for these sections during the formation of the smoking article 100. These ventilation portions can be provided, for example, by laser processing after the smoking article 100 has been manufactured. Furthermore, the non-adhesive portion 3n can also be printed. For example, if a code indicating the manufacturing machinery is printed on the non-adhesive portion 3n, the code can be identified when the cigarette holder paper 7 is peeled off after rolling.

[0196] The non-adhesive portion 3n can be provided in a region extending along the length of the filter section 5, with a starting point of 40-50% and an ending point of 70-90%, based on the contact surface (point Y) between the cooling section 3 and the filter section 5. That is, the non-adhesive portion 3n can be provided in... Figure 2 The region extending from 0.4 to 0.5Y to 0.7 to 0.9Y in the direction of the suction nozzle. By setting the non-adhesive portion 3n in this way, the reduction in the overall adhesive strength of the mouthpiece paper can be suppressed.

[0197] Non-adhesive part 3n such as Figure 2 As shown, there can be two or one non-adhesive portions in the circumferential direction. The total length of the non-adhesive portion 3n in the circumferential direction ( Figure 2 (2) In this case, t1+t1) is preferably 50-80% of the circumferential length P of the mouthpiece paper 7. When there are two non-adhesive portions 3n in the circumferential direction, the distance t2 from the circumferential end to the non-adhesive portion 3n is preferably 5-10% of P. The separation distance t3 between the two portions can be appropriately adjusted by t1 and t2.

[0198] Preferably, the cigarette holder paper 7 has a non-adhesive portion 5n near the end of the filter section 5. This is because, as Figure 3 As shown, the smoking article 100 is sometimes manufactured by preparing a smoking article 100w that is twice the length and then cutting it. However, this makes cutting easier and prevents adhesive from adhering to the cutter. The length v of the non-adhesive portion 5n in the longitudinal direction of the mouthpiece paper 7 is preferably 0.5 to 1.0 mm. The longitudinal length of the mouthpiece paper 7 can be set to a length in the range of 0.42X to 0.6X from the mouthpiece end of the filter section 5 to the length of the tobacco rod 1.

[0199] (2) Process B

[0200] In this process, the composite section 90 is wrapped with 7w cigarette holder paper. (For example...) Figure 3 As shown, the double-length composite section 90w can also be wrapped with cigarette holder paper 7. In this case, cut it after wrapping to obtain smoking item 100.

[0201] The packaging can be carried out using well-known methods. For example, this process is as follows: Figure 8 As shown, this is implemented using a device with multiple rollers. In the figure, 80f is the feeding device for the mouthpiece paper 7, 80t is the transfer roller, 80r is the rotating roller, and 80h is the rolling hand. The rotating roller refers to a holding part that holds components on its circumferential surface, and is a roller that has a holding part that allows components such as sections to rotate around their longitudinal central axis. The rolling hand refers to a mechanism that is disposed opposite to the circumferential surface of the rotating roller and is used to form a gap with a certain distance between it and the surface. The section consisting of the tobacco rod 1, the cooling section 3, and the filter section 5 is designated as a composite section 90. This composite section 90 is transferred from the transfer roller 80t to the rotating roller 80r. On the other hand, a portion of the mouthpiece paper 7 supplied from the feeding device 80f is bonded to the circumferential surface of the section on the rotating roller 80r to form a precursor 92 (see reference). Figure 9 The precursor 92 has a mouthpiece paper 7 adhered to the composite section 90 like a flag. That is, a portion of the mouthpiece paper 7 is adhered to the circumferential surface of the composite section 90, but other portions are free. The precursor 92 is moved to the gap formed between the rotating roller 80r and the rotating handle 80h by a holding part fixed to the circumferential surface of the rotating roller 80r by suction or the like. When passing through this gap, the entire circumferential surface of the precursor 92 is rolled up by the mouthpiece paper 7 to form a smoking article 100 (see reference). Figure 9 ).

[0202] As mentioned earlier, there are cases where adjacent components have different diameters. For example... Figure 10 The diagram shows a combination of a tobacco rod 1, a component with a larger diameter, and a cooling section 3, an adjacent component. In this case, if the surfaces of the rotating roller 80r and the rotating handle 80h are flat, these surfaces will make excessive contact with the component with a larger diameter. Figure 10 (1) Therefore, components with larger diameters are subjected to impacts, resulting in defects. For example, in the case of a tobacco stick with a larger diameter, a problem known as tip-end falling off occurs, where the filling material falls off. Furthermore, torsion due to circumferential differences occurs, resulting in defects such as wrinkles in the product. Therefore, in this invention, it is preferable that, as Figure 10 As shown in (2) and (3), a recess is provided on the surface of the rotating roller 80r or the rotating handle 80h opposite the component with a larger diameter, forming a gap between them. Although Figure 10 (2) and (3) show the method of providing a recess in the rotating handle 80h, but the recess can also be provided in the rotating roller 80r, or in both. The depth of the recess ( Figure 10 (2) and (3) T) can be adjusted appropriately, but preferably 0.05 to 0.15 mm. This recess does not need to be provided on the entire surface opposite to the tobacco rod 1. For example... Figure 10As shown, the recess can be provided on a portion of the surface opposite to the tobacco rod 1. However, in order to reliably bond the tobacco rod to other components with the mouthpiece paper, it is preferable that there is no recess near the boundary between the two components.

[0203] II. Second Method

[0204] 1. Secondary heated smoking items

[0205] The second heated smoking article of the present invention (hereinafter also referred to as "second smoking article") includes at least a tobacco rod, a cooling section, and a filter section. Figure 12 This diagram illustrates one configuration of a second smoking article. In the figure, 100 is the smoking article, 1 is the tobacco rod, 3 is the cooling section, 5 is the filter section, 7 is the mouthpiece paper, and 1b is the portion of the mouthpiece paper with a higher weight of cured adhesive per unit area. Regardless of the relative rigidity of the tobacco rod 1 to the adjacent components, the second smoking article has a portion 1b in the mouthpiece paper 7 that has a higher adhesive weight in the area surrounding the tobacco rod 1. This reliably prevents the neck of the tobacco rod 1 from detaching. Specifically, the second smoking article includes configurations where the rigidity of the tobacco rod is G, and the rigidity of the adjacent components is g, including configurations where G < g, G = g, and G > g.

[0206] The components adjacent to the tobacco stick are not limited; for example, as a combination of the tobacco stick and its adjacent components, the following order can be listed.

[0207] Tobacco rod / cooling section

[0208] Tobacco rod / support section

[0209] Regarding the tobacco stem, cooling section, filter section, support section, and mouthpiece paper, as described in the first smoking article.

[0210] 2. Second manufacturing method

[0211] The second manufacturing method comprises: (A') a step of applying adhesive to one side of a mouthpiece paper in such a way that a portion with a greater weight of cured adhesive per unit area and a portion with a smaller weight of adhesive are formed, wherein the portion with a greater weight of adhesive is provided in the area covering the tobacco rod; and (B') a step of preparing a composite section and wrapping the composite section with the mouthpiece paper, wherein the composite section comprises at least the tobacco rod, a cooling section, and a filter section.

[0212] Figure 13The figure shows an outline of the second manufacturing method. In the figure, 90 is the composite section of the smoking article before wrapping, O is the abutment between the tobacco rod 1 and the cooling section 3 as an adjacent part, Y is the abutment between the cooling section 3 and the filter section 5, 7 is the mouthpiece paper for wrapping the composite section 90, and other reference numerals are defined as previously described.

[0213] (1) Process A'

[0214] In this process, adhesive is applied to one side of the cigarette holder paper 7. The method for applying the adhesive is the same as in the first method, which enables... Figures 4-6 The process is carried out as shown. Regarding the adhesive weight of the adhesive portion b, etc., it is also as described in the first manufacturing method. In this invention, only the adhesive weight of the adhesive increment portion 1b is increased, thus preventing the neck of the tobacco rod 1 from detaching and preventing wrinkles from forming in other parts. Although the larger the area of ​​the adhesive increment portion 1b, the less likely it is to cause adverse conditions such as neck detachment, considering factors such as cost, the adhesive increment portion 1b does not need to be the entire surface of the tobacco rod 1. Preferably, the adhesive increment portion 1b exists at the joint surface between the tobacco rod 1 and the adjacent component (…). Figure 13 (1) The region starting from point O) and ending at a position 20-40% along the length of the tobacco stem 1. That is, the adhesive increment 1b preferably exists in the region starting from point O). Figure 13 The region starting from point O and ending at 0.2X to 0.4X. The adhesive increment 1b is as follows. Figure 13 As shown, there can be two or one adhesive increment portions 1b in the circumferential direction. The total length (s1+s1) of the strongly adhesive portion 1b in the circumferential direction is preferably 70-90% of the circumferential length P of the mouthpiece paper 7. When there are two adhesive increment portions 1b in the circumferential direction, the distance s2 from the circumferential end to the adhesive increment portion 1b is preferably 2-5% of P. The separation distance s3 between the two can be adjusted appropriately based on s1 and s2.

[0215] Preferably, the adhesive increment 1b does not wrap the cooling section 3. This is because, given the low rigidity of the cooling section 3, wrapping it with the adhesive increment 1b would easily cause wrinkles. Furthermore, when the cooling section 3 is a paper tube made of cardboard, its basis weight is relatively high, making it difficult for the adhesive to penetrate compared to the paper roll of the tobacco rod 1. Therefore, if the amount of adhesive covering the paper tube is less than that covering the tobacco rod 1, defects such as adhesive protrusion, wrinkles, and poor adhesion can be suppressed.

[0216] The mouthpiece paper 7 preferably has a non-adhesive portion 1n at its front end. In this embodiment, the front end, when the mouthpiece paper is rolled, refers to the area of ​​the mouthpiece paper at the very front of the tobacco rod. This is to prevent adhesive from seeping out from the front end of the mouthpiece paper 7 during wrapping. The length u of the non-adhesive portion 1n in the longitudinal direction of the mouthpiece paper 7 is preferably 0.1 to 1.0 mm. Regarding the non-adhesive portions 3n and 5n, as explained in the first manufacturing method.

[0217] (2) Process B'

[0218] In this process, as described in the first manufacturing method, the composite section 90 is wrapped with the mouthpiece paper 7. Figure 14 As shown, the double-length composite section 90w can also be wrapped with cigarette holder paper 7. In this case, cut it after wrapping to obtain smoking item 100.

[0219] As previously mentioned, the tobacco rod 1 may have a diameter larger than that of adjacent components (e.g., cooling section 3). In this case, it is preferable to use the method described in the first manufacturing method, such as... Figure 10 As shown, a recess is provided on the surface of the rotating roller 80r or the rotating handle 80h opposite to the tobacco rod 1, forming a gap between the roller and the tobacco rod 1.

[0220] Example

[0221] [Example 1]

[0222] The following components have been prepared.

[0223] Tobacco stick with a diameter of 7.0 mm and a length of 20.0 mm (manufactured by Japan Tobacco Industry Co., Ltd.)

[0224] The cooling section is a paper tube with a diameter of 6.9 mm and a length of 20.0 mm.

[0225] The double-length filter section consists of a 6.9mm diameter center hole component (8.0mm), a double-length acetate filter tip (14.0mm), and another 8.0mm center hole component.

[0226] Prepared Figure 11 The cigarette holder paper shown is illustrated. Dimensions are shown in Table 1. Adhesive was applied to this cigarette holder paper. The thickness of the adhesive layer in its uncured state and the weight of the cured adhesive are shown in Table 1.

[0227] [Table 1]

[0228]

[0229] The components were configured to produce Figure 14A double-length smoking article as shown was obtained by wrapping it with the cigarette holder paper. The resulting smoking article was wrinkle-free and exhibited a good appearance. Furthermore, the resulting smoking article showed good resistance to neck detachment.

[0230] Explanation of reference numerals in the attached figures

[0231] 1 Tobacco stick

[0232] 3 Cooling Section

[0233] 5. Filter section

[0234] 51 Acetate Filter Tip

[0235] 53 Center hole component

[0236] 7. Cigarette mouthpiece paper

[0237] 100 Smoking Items

[0238] b Adhesive part

[0239] 1b High-adhesion section

[0240] The non-adhesive portion at the front end of the 1n cigarette holder paper 7

[0241] The non-adhesive portion of the 3n-wrapped cooling section

[0242] Circumferential length of P cigarette holder paper 7

[0243] 7W Double Length Cigarette Holder Paper

[0244] 100w double-length smoking item

[0245] The front end of X tobacco stick 1

[0246] The contact area between tobacco rod 1 and cooling section 3

[0247] The contact area between cooling section 3 and filter section 5

[0248] Z Double Length Filter Section 5W Central Section

[0249] 80f cigarette holder paper 7 supply device

[0250] 80t transfer roller

[0251] 80r rotating drum

[0252] 80h Rotary Handle

[0253] 85 Reverse pressure roller

[0254] 86 Second Counter-Pressure Roller

[0255] 87 Return Roller

[0256] 88 graphic rollers

[0257] 89 Transfer Roller

[0258] 90 Composite Section

[0259] 92 precursor

Claims

1. A method for manufacturing a smoking article, wherein the smoking article, as a component, includes at least a tobacco rod, a cooling section, and a filter section, wherein the rigidity of the cooling section adjacent to the tobacco rod is greater than the rigidity of the tobacco rod, characterized in that, This manufacturing method has the following features: (A') A process of preparing adhesive on one side of the cigarette holder paper in such a way that a portion with a larger weight of cured adhesive per unit area is formed and a portion with a smaller weight of adhesive per unit area. In this process, a portion of the adhesive with a higher weight is placed in the area where the tobacco stem is wrapped, and (B') The process of preparing the composite section and wrapping the composite section with the mouthpiece paper, wherein the composite section comprises at least the tobacco rod, the cooling section, and the filter section. The diameter of the tobacco rod is larger than the diameter of the cooling section. In the process (A'), the portion of the adhesive with a larger weight is placed in the area starting from the contact surface between the tobacco rod and the cooling section and ending at a position 20-40% along the length of the tobacco rod.

2. The method for manufacturing a smoking article according to claim 1, characterized in that, The adhesive weight in the portion with a larger adhesive weight is 1.5 to 3 times the adhesive weight in the portion with a smaller adhesive weight.

3. The method for manufacturing a smoking article according to claim 1 or 2, characterized in that, The smoking article has a tobacco stem at its foremost end. When the area of ​​the mouthpiece paper located at the very front of the tobacco stem is defined as the front end of the mouthpiece paper when the mouthpiece paper is rolled up, In the process (A'), a non-adhesive portion is provided on the front end portion.

4. The method for manufacturing a smoking article according to claim 1 or 2, characterized in that, In the process (A'), a non-adhesive portion is provided in the area that wraps the cooling section.

5. The method for manufacturing a smoking article according to claim 1 or 2, characterized in that, The composite section in process (B') is a double-length composite section formed by arranging a pair of composite sections in such a way that the end faces of the filter section abut against each other.

6. The method for manufacturing a smoking article according to claim 5, characterized in that, A non-adhesive portion is provided near the area where the package meets the wall.

7. The method for manufacturing a smoking article according to claim 4, characterized in that, It also includes the process of setting an opening in the non-adhesive portion.

8. The method for manufacturing a smoking article according to claim 4, characterized in that, It also includes a process of printing on the non-adhesive portion.

9. The method for manufacturing a smoking article according to claim 1, characterized in that, The diameter of the tobacco rod is 0.05 to 0.15 mm larger than the diameter of the adjacent cooling section.

10. The method for manufacturing a smoking article according to claim 1, characterized in that, The diameter of the tobacco stem is 0.5 to 2.5% larger than the diameter of the adjacent section.

11. A smoking article, comprising at least a tobacco stem, a cooling section, a filter section, and a mouthpiece paper covering them, wherein the rigidity of the cooling section adjacent to the tobacco stem is greater than the rigidity of the tobacco stem, characterized in that, The cigarette holder paper has a portion with a higher and a lower weight of cured adhesive per unit area. The area where the cigarette holder paper wraps around the tobacco stem has a portion that contains a greater weight of the adhesive. The diameter of the tobacco rod is larger than the diameter of the adjacent cooling section. The portion of the adhesive with a larger weight is located in the area starting from the contact surface between the tobacco rod and the adjacent cooling section, and ending at a position 20-40% along the length of the tobacco rod.

12. The smoking article according to claim 11, characterized in that, The adhesive weight in the portion with a larger adhesive weight is 1.5 to 3 times the adhesive weight in the portion with a smaller adhesive weight.

13. The smoking article according to claim 11 or 12, characterized in that, The cigarette holder paper has a non-adhesive portion in the area that wraps the cooling section.

14. The smoking article according to claim 11 or 12, characterized in that, The cigarette holder paper has a non-adhesive portion in the area that wraps the filter section.

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