Smoking products

Abstract

The present invention relates to a paper tube for smoking articles including a flavoring sheet and a smoking article including the same, and more specifically, to a paper tube for smoking articles and a smoking article including the same, wherein the inner surface, the outer surface or both surfaces of the paper tube include a flavoring sheet, and the flavoring sheet includes a cellulose-based polymer, a plasticizer and an aroma substance.

Description

Technical Field

[0001] The present invention relates to a paper tube comprising a flavoring sheet and a smoking article comprising the paper tube. Background Art

[0002] For the heated cigarette rods in smoking articles, in order to make the medium part release the smoking flavor, special equipment must be used for heating. As for the existing special equipment for heated cigarette rods for releasing smoking flavor, a temperature program is designed to achieve high-temperature heating in consideration of the heat transfer to the inside of the medium part. The heating temperature is usually maintained at 200℃ to 400℃. Unlike traditional cigarettes that burn tobacco, a large amount of water vapor may be generated when the medium part of the cigarette rod is heated by the equipment.

[0003] The heating temperature inside the medium section is below 100° C. to 200° C. The airflow generated inside the medium section also maintains a corresponding temperature, so if no cooling material is provided downstream of the medium section, the smoker will inhale hot air.

[0004] The cooling material of the existing heating type cigarette stick uses a polymer material (PLA, CA, PET, etc.) that undergoes phase change by absorbing heat in the airflow. The cooling effect is achieved by making the polymer material into a film and applying it to the entire filter stick cross-section. Alternatively, a tubular filter stick made of paper tubes and cellulose acetate can be used between the most downstream part and the medium part to provide inhalation resistance to the cigarette stick device, and a hollow tube portion is formed to form a vortex in the airflow, thereby achieving a cooling effect.

[0005] However, the above-mentioned polymer materials (PLA, CA, PET, etc.) can only be melt-coated. When made into sheets, they are not flexible, brittle and easily broken. Therefore, they cannot be directly coated and can only be coated on base paper. Summary of the invention

[0006] Problem that the invention aims to solve

[0007] The object of the present invention is to solve the above-mentioned problem and provide a paper tube for smoking articles, which is suitable for a flavoring sheet with cooling and flavor releasing effects, thereby improving the quality and taste of the smoking articles.

[0008] The present invention provides a smoking article comprising a paper tube of the present invention.

[0009] The technical problems to be solved by the present invention are not limited to the above problems, and other problems not mentioned will be clearly understood by ordinary technicians in this field through the following description.

[0010] Means used to solve problems

[0011] According to an embodiment of the present invention, the paper tube for smoking articles comprises a flavoring sheet on the inner surface, the outer surface or both surfaces of the paper tube, and the flavoring sheet comprises a cellulose-based polymer, a plasticizer and a flavoring substance.

[0012] According to an embodiment of the present invention, the cellulose-based polymer may account for 20 wt % to 60 wt % of the flavoring sheet.

[0013] According to an embodiment of the present invention, the plasticizer may account for 1 wt % to 20 wt % of the flavoring sheet.

[0014] According to an embodiment of the present invention, the aroma substance may account for 10% to 50% by weight of the aromatizing sheet.

[0015] According to an embodiment of the present invention, the cellulose may include at least one selected from the group consisting of methyl cellulose, ethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose and agar.

[0016] According to an embodiment of the present invention, the plasticizer may include at least one selected from the group consisting of propylene glycol, polyethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, glycerol and sorbitol.

[0017] According to an embodiment of the present invention, the suction resistance per millimeter (mm) of the length of the paper tube may be 0.1 mmH2O to 1.5 mmH2O.

[0018] According to an embodiment of the present invention, the thickness of the flavoring sheet may be less than 1 mm.

[0019] According to an embodiment of the present invention, the tensile strength of the flavoring sheet may be greater than 1.0 kgf / 15 mm.

[0020] According to an embodiment of the present invention, the circumference of the paper tube may be 1 mm to 25 mm, and the length may be greater than 5 mm.

[0021] According to an embodiment of the present invention, the paper tube comprises: a first layer including the flavoring sheet, and a second layer wrapping the first layer; a thickness ratio of the first layer to the second layer may be 2.5:1 to 0.5:1.

[0022] According to one embodiment of the present invention, the paper tube may include: a first layer, including the flavoring sheet, a second layer, wrapping the first layer, and a third layer, including the flavoring sheet; the thickness ratio of the first layer or the third layer to the second layer may be 2.5:1 to 0.5:1.

[0023] According to an embodiment of the present invention, a paper tube for smoking products comprises a flavoring sheet on its inner surface, outer surface or both surfaces, wherein the flavoring sheet comprises a cellulose-based polymer, a plasticizer, and an aroma substance, wherein the content of the cellulose-based polymer in the flavoring sheet is greater than 40% by weight and less than or equal to 60% by weight, and the paper tube comprises: a first layer comprising the flavoring sheet, and a second layer for wrapping the first layer; the thickness ratio of the first layer to the second layer is 2.5:1 to 0.5:1.

[0024] A smoking article according to an embodiment of the present invention comprises a filter rod portion having the paper tube of the present invention.

[0025] According to an embodiment of the present invention, the smoking article is a cigarette or an electronic cigarette, and is of a cigarette type.

[0026] According to an embodiment of the present invention, the filter rod portion may include: a first filter rod; a second filter rod including the paper tube; and a third filter rod including a tubular structure.

[0027] According to an embodiment of the present invention, the first filter rod may include a fiber, a filament, or both of at least one of polymer, paper, cellulose acetate, activated carbon, and carbon.

[0028] According to another embodiment of the present invention, a smoking article comprises a filter rod portion having a paper tube for smoking articles, wherein the inner surface, the outer surface or both surfaces of the paper tube for smoking articles comprise a flavoring sheet, wherein the flavoring sheet comprises a cellulose-based polymer, a plasticizer, and an aroma substance, wherein the content of the cellulose-based polymer in the flavoring sheet is greater than 40% by weight and less than or equal to 60% by weight, and the paper tube for smoking articles comprises: a first layer, comprising the flavoring sheet, and a second layer, for wrapping the first layer; the thickness ratio of the first layer to the second layer is 2.5:1 to 0.5:1.

[0029] Effects of the Invention

[0030] The present invention can add a flavoring sheet to the paper tube to give the airflow cooling effect and provide a flavor expression effect to improve the cigarette taste and the smoking taste persistence. For example, downstream of the medium part of the heating type cigarette stick, it is arranged inside and / or outside the paper tube to improve the cooling effect, cigarette taste and smoking taste persistence. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 2 is an exemplary diagram of a paper tube structure according to an embodiment of the present invention.

[0032] Figure 2 1 is an exemplary drawing of a smoking article applicable to the paper tube of the present invention according to an embodiment of the present invention.

[0033] Figure 3 FIG. 1 is an exemplary drawing of a smoking article applicable to the paper tube of the present invention according to another embodiment of the present invention. DETAILED DESCRIPTION

[0034] Below, embodiments of the present invention are described in detail with reference to the accompanying drawings. When describing the present invention, when it is considered that a specific description of the relevant known functions or structures will unnecessarily confuse the gist of the present invention, a detailed description thereof will be omitted. In addition, the terms in this specification are used to accurately describe the embodiments, which may vary depending on the intention of the user, operator, or the conventions of the technical field to which the present invention belongs. Therefore, the definition of terms should be based on the overall description content. The same figure numbers in the drawings represent the same components.

[0035] Throughout the specification, when it is stated that a certain component is "on" another component, this includes not only a case where one component is in contact with another component but also a case where another component exists between the two components.

[0036] Throughout the specification, when it is stated that a certain part “includes” a certain constituent element, other constituent elements may also be included rather than excluding the possibility of the existence of other constituent elements.

[0037] Hereinafter, the paper tube for smoking articles and the smoking articles including the paper tube of the present invention will be described in detail with reference to the embodiments and the accompanying drawings. However, the present invention is not limited to these embodiments and the accompanying drawings.

[0038] The present invention relates to a paper tube for smoking articles. The paper tube may include a flavoring sheet. The flavoring sheet is arranged on the inner surface, the outer surface or both surfaces of the paper tube.

[0039] According to one embodiment of the present invention, the flavoring sheet may include a cellulose-based polymer, a plasticizer, and a flavoring substance. The flavoring sheet is in the shape of a film and can contain a flavoring substance in the cellulose-based polymer, thereby improving the persistence of the transferred flavor and / or cigarette taste in the smoking article. In addition, for example, in smoking articles such as cigarette sticks, the cellulose-based polymer undergoes a phase change (e.g., crystallization) only at the temperature (e.g., high temperature) of the airflow moving to the smoker, thereby providing an airflow cooling effect. In addition, since the flavoring sheet has a strong tensile strength and is flexible, it does not need to be coated on the base paper, and it can be used as a part of a paper tube or a paper tube filter stick.

[0040] According to one embodiment of the present invention, the "smoking article" (smoking article) is based on cigarettes, tobacco derivatives, expanded tobacco, tobacco flakes (reconstituted tobacco) or cigarette substitutes, as long as it is any product that can be inhaled or any product that provides a smoking experience. For example, the smoking article may refer to an inhalable product that can generate an aerosol, such as a cigarette, a cigar, a cigarillo, an electronic cigarette (e.g., a heating type), etc. The smoking article may include an aerosol generating substance or an aerosol generating matrix. In addition, the smoking article may include solid substances based on tobacco raw materials such as reconstituted tobacco, raw cut tobacco and reconstituted tobacco. In addition, the smoking article may include volatile compounds.

[0041] According to one embodiment of the present invention, the cellulose-based polymer is a binder material, and a polymer matrix is ​​also provided to form a sheet material that can retain aromatic substances, has flexibility and strong tensile strength. For example, the cellulose-based polymer may include at least one selected from the group consisting of methyl cellulose, ethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, and agar, but is not limited thereto. Preferably, it may be methyl cellulose and hydroxypropyl methyl cellulose.

[0042] According to one embodiment of the present invention, the cellulose-based polymer accounts for 20 weight % to 60 weight %, 20 weight % to 50 weight %, or 30 weight % to 40 weight % of the flavoring sheet. When the content of the cellulose-based polymer is less than 20 weight %, it is difficult to have sufficient tensile strength and flexibility so that it can be used as a paper tube or paper tube filter rod base paper, or it is difficult to be made into a sheet. When it exceeds 60 weight %, the sheet will undergo physical changes (such as breakage or cracking), and the flavor substances in the sheet cannot release the flavor well, making it difficult to improve the taste of cigarettes and the persistence of smoking flavor.

[0043] According to an embodiment of the present invention, the flavor substance can release fragrance and / or impart fragrance characteristics, or can improve the smoking taste, and any flavor substance that can be used for smoking products can be used without restriction, and can include at least one selected from the group consisting of organic acids such as lactic acid, citric acid, malic acid, licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, bitter incense tree, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, peppermint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cassia, ylang ylang, salvia miltiorrhiza, green mint, ginger, coriander, clove extract (or clove substance) and coffee, but is not limited to this.

[0044] According to one embodiment of the present invention, the aroma substance accounts for 10 weight % to 50 weight %, 10 weight % to 40 weight %, 10 weight % to 30 weight %, or 10 weight % to 20 weight % of the aroma sheet. When the content of the aroma substance is within the above range, the persistence of the mobile aroma and / or the taste of the cigarette can be improved and a high concentration can be achieved. Not only that, the aroma and / or aroma intensity can also be adjusted by adding concentration.

[0045] According to an embodiment of the present invention, the plasticizer may include at least one selected from the group consisting of propylene glycol, polyethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, glycerol and sorbitol, but is not limited thereto. Preferably, propylene glycol and glycerol may be used.

[0046] According to one embodiment of the present invention, in order to adjust the hardness of the flavoring sheet, the plasticizer accounts for 1 weight % to 20 weight %, 1 weight % to 15 weight %, 1 weight % to 10 weight %, or 5 weight % to 10 weight % of the flavoring sheet. When the content of the plasticizer is less than 1 weight %, it is difficult to have suitable tensile strength to be used as a part of the paper tube filter rod of the smoking product, or the elongation is too low to have flexibility; when the content of the plasticizer exceeds 20 weight %, the physical properties of the sheet (such as too low tensile strength or too soft) are poor, it is easy to tear, and it is difficult to be made into a paper tube filter rod of the smoking product.

[0047] According to an embodiment of the present invention, the thickness of the flavoring sheet is less than 1 mm, 0.1 mm to 1 mm, 0.1 mm to 0.8 mm, or 0.2 mm to 0.5 mm, and the flavoring sheet may be a single layer or multiple layers. When the thickness of the flavoring sheet exceeds 1 mm, the flexibility of the sheet cannot be well achieved, and it is difficult to make a paper tube or paper tube filter rod of a smoking product, and the fragrance cannot be well released due to the increased thickness; if the flavoring sheet is too thin, the cooling effect may not be achieved.

[0048] According to an embodiment of the present invention, the flavoring sheet has sufficient tensile strength so that it can be used as a part of a paper tube or paper tube filter of a smoking product. For example, the tensile strength of the flavoring sheet is 1.0 kgf / 15 mm or more, 2.0 kgf / 15 mm or more, 5.0 kgf / 15 mm or more, or 1.0 kgf / 15 mm to 10 kgf / 15 mm. When the tensile strength is within the above range, a flavoring sheet having a balanced hardness and flexibility and suitable for a paper tube or paper tube filter base paper for a smoking product can be provided.

[0049] According to an embodiment of the present invention, the inhalation resistance per millimeter (mm) of the paper tube may be 0.1 mmH2O to 1.5 mmH2O. When included in the range of the inhalation resistance, smoke can flow smoothly during smoking, improving the taste of cigarettes and the durability of smoking taste.

[0050] According to an embodiment of the present invention, the circumference of the paper tube may be 14 mm to 25 mm, 14 mm to 20 mm, or 14 mm to 18 mm, and the length may be greater than 5 mm, greater than 10 mm, 10 mm to 20 mm, or 10 mm to 15 mm.

[0051] According to one embodiment of the present invention, the flavoring sheet can be located on the inner surface, the outer surface or both of the paper tube, and the paper tube can be used as a part of a smoking product, for example, it can be used as a filter rod part (for example, a paper tube filter rod), which will be specifically described in the smoking products below.

[0052] According to one embodiment of the present invention, referring to Figure 1 In part (a), the paper tube includes: a first layer 110, including the flavoring sheet, and a second layer 120, which is used to wrap the first layer and is made of paper. That is, by attaching the flavoring sheet to the inner wall of the paper tube composed of a cooling material having a hollow tube, the cooling effect, the taste of the cigarette, and the persistence of the smoking taste can be improved. The thickness ratio of the first layer to the second layer can be 2.5:1 to 0.5:1. When included in the thickness range, the cooling efficiency can be improved, and the taste of the cigarette and the persistence of the smoking taste can be improved. For example, it can be the ratio of the thickness of the first layer (250μm to 50μm) to the thickness of the second layer (100μm).

[0053] According to one embodiment of the present invention, referring to Figure 1Part (b), the paper tube includes: a first layer 110, including the flavoring sheet, and a second layer 120, which is used to wrap the first layer and is made of paper, and a third layer 130, including the flavoring sheet; the flavoring sheets of the first layer and the third layer can be the same, or at least one of the composition, thickness and physical properties is different. For example, the thickness ratio of the first layer or the third layer to the second layer can be 2.5:1 to 0.5:1. When included in the thickness range, the cooling efficiency is high, and the cigarette taste and smoking taste persistence can be improved.

[0054] The present invention relates to a smoking article comprising a paper tube according to the invention.

[0055] According to one embodiment of the present invention, the smoking article may include a filter rod portion and a smoking material portion, and the filter rod portion may include the flavoring sheet of the present invention. For example, the cooling and aroma release effects can be provided by using a paper tube with the flavoring sheet applicable to the present invention.

[0056] According to one embodiment of the present invention, the filter rod portion may be a two-body filter rod or a three-body filter rod. Furthermore, the filter rod portion may include at least one of a porous matrix structure filter rod, a tubular structure filter rod (hollow tube filter) and a paper tube (paper tube) filter rod. Furthermore, the flavoring sheet of the present invention may be attached to the inner wall of the tubular filter rod. Thus, by applying the flavoring sheet to the inner surface of the hollow tube of the paper tube filter rod and the tubular filter rod as cooling materials, the airflow can be made to form a vortex while absorbing heat to more easily achieve the cooling effect.

[0057] According to an embodiment of the present invention, the two-body filter rod may include a first filter rod and a second filter rod, and the second filter rod may include a paper tube (eg, a paper tube filter rod) suitable for the flavoring sheet of the present invention.

[0058] According to one embodiment of the present invention, the three-body filter rod may include: a first filter rod, a second filter rod including a paper tube (such as a paper tube filter rod) suitable for the flavoring sheet of the present invention, and a woven structure filter rod or a tubular filter rod, wherein the first filter rod is located in the direction close to the smoker (downstream direction) in the heating type cigarette rod, and the second filter rod and the third filter rod are located in the direction away from the smoker (upstream direction) respectively.

[0059] According to one embodiment of the present invention, referring to Figures 2 to 3 The smoking article may be a cigarette or an electronic cigarette, and may be a cigarette type. That is, the flavoring sheet can achieve the airflow cooling effect, release the fragrance, and improve the taste of the cigarette and the durability of the smoking taste. For example, by applying the flavoring sheet to the paper tube with a cooling effect, the airflow can be vortexed and absorb heat to achieve the cooling effect more easily.

[0060] According to one embodiment of the present invention, referring to Figure 2 The smoking article may be a three-body filter rod, comprising: a first filter rod 210, a second filter rod 220 comprising a paper tube of the present invention, and a third filter rod 230 comprising a woven structure filter rod or a tubular filter rod. The filter rod portion cools the airflow flowing from the smoking material portion 240 along the airflow moving direction, while releasing flavor and / or aroma through the flavoring sheet.

[0061] According to an embodiment of the present invention, the lengths of the first filter rod portion 210, the second filter rod portion 220, the third filter rod portion 230 and the smoking material portion 240 can be selected from 10 mm to 20 mm, or 10 mm to 15 mm, respectively.

[0062] According to one embodiment of the present invention, referring to Figure 3 The smoking article may be a three-body filter rod, comprising: a first filter rod 310, a second filter rod 320 comprising a woven structure filter rod or a tubular filter rod, and a third filter rod 330 having the paper tube of the present invention.

[0063] According to an embodiment of the present invention, the lengths of the first filter rod portion 310, the second filter rod portion 320, the third filter rod portion 330 and the smoking material portion 340 may be selected from 10 mm to 20 mm, or 10 mm to 15 mm, respectively.

[0064] According to one embodiment of the present invention, the inner surface of the hollow tube of the second filter rod portion 320 and the third filter rod portion 330 includes a paper tube or paper tube filter rod suitable for the flavoring sheet of the present invention. The flavoring sheet may include a cellulose-based polymer, a plasticizer and an aroma substance. The flavoring sheet is in the shape of a film and can contain aroma substances in the cellulose-based polymer, thereby improving the persistence of the transferred aroma and / or cigarette taste in the smoking article.

[0065] According to one embodiment of the present invention, the cellulose-based polymer is an adhesive material, and a polymer matrix is ​​also provided to form a sheet material that retains aromatic substances, has flexibility and strong tensile strength. For another example, the cellulose-based polymer can also be used together with a solvent (e.g., water) and alcohol for dissolving and / or dispersing components for film formation and / or sheet formation. For example, the cellulose-based polymer can include at least one selected from the group consisting of methylcellulose, ethylcellulose, carboxymethylcellulose, carboxyethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxyethylmethylcellulose, and agar, but is not limited thereto. Preferably, it can be methylcellulose and hydroxypropylmethylcellulose.

[0066] According to one embodiment of the present invention, the cellulose-based polymer accounts for 20 weight % to 60 weight %, 20 weight % to 50 weight %, or 30 weight % to 40 weight % of the flavoring sheet. When the content of the cellulose-based polymer is less than 20 weight %, it is difficult to have sufficient tensile strength and flexibility so that it can be used as a component of a paper tube or a paper tube filter rod, or it is difficult to be made into a sheet. When it exceeds 60 weight %, the sheet will undergo physical changes (such as breakage or cracking), and the flavor substances in the sheet cannot release the flavor well, making it difficult to improve the taste of cigarettes and the persistence of smoking flavor.

[0067] According to an embodiment of the present invention, the flavor substance can release fragrance and / or impart fragrance characteristics, or can improve the smoking taste, and any flavor substance that can be used for smoking products can be used without restriction, and can include at least one selected from the group consisting of organic acids such as lactic acid, citric acid, malic acid, licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, bitter incense tree, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, peppermint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cassia, ylang ylang, salvia miltiorrhiza, green mint, ginger, coriander, clove extract (or clove substance) and coffee, but is not limited to this.

[0068] According to one embodiment of the present invention, the aroma substance accounts for 10 weight % to 50 weight %, 10 weight % to 40 weight %, 10 weight % to 30 weight %, or 10 weight % to 20 weight % of the aroma sheet. When the content of the aroma substance is within the above range, the persistence of the mobile aroma and / or the taste of the cigarette can be improved and a high concentration can be achieved. Not only that, the aroma and / or aroma intensity can also be adjusted by adding concentration.

[0069] According to an embodiment of the present invention, the plasticizer may include at least one selected from the group consisting of propylene glycol, polyethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, glycerol and sorbitol, but is not limited thereto. Preferably, propylene glycol and glycerol may be used.

[0070] According to one embodiment of the present invention, in order to adjust the hardness of the flavoring sheet, the plasticizer is 1 weight % to 20 weight %, 1 weight % to 15 weight %, 1 weight % to 10 weight %, or 5 weight % to 10 weight % of the flavoring sheet. When the content of the plasticizer is less than 1 weight %, it is difficult to have suitable tensile strength to be used as a component of paper tubes or paper tube filter rods of smoking products, or the elongation is too low to have flexibility; when the content of the plasticizer exceeds 20 weight %, the physical properties of the sheet (for example, the tensile strength is too low or it is too soft) are poor, it is easy to tear, and it is difficult to be made into a paper tube filter rod of a smoking product.

[0071] According to an embodiment of the present invention, the thickness of the flavoring sheet is less than 1 mm, 0.1 mm to 1 mm, 0.1 mm to 0.8 mm, or 0.2 mm to 0.5 mm, and the flavoring sheet may be a single layer or multiple layers. When the thickness of the flavoring sheet exceeds 1 mm, the flexibility of the sheet cannot be well achieved, it is difficult to make a paper tube of a smoking product, and the fragrance cannot be well released due to the increased thickness; if the flavoring sheet is too thin, the cooling effect may not be achieved.

[0072] According to an embodiment of the present invention, the flavoring sheet has sufficient tensile strength so that it can be used as a part of a paper tube or paper tube filter of a smoking product. For example, the tensile strength of the flavoring sheet is 1.0 kgf / 15 mm or more, 2.0 kgf / 15 mm or more, 5.0 kgf / 15 mm or more, or 1.0 kgf / 15 mm to 10 kgf / 15 mm. When the tensile strength is within the above range, a flavoring sheet suitable for a paper tube base paper for smoking products with balanced strength and flexibility can be provided.

[0073] According to an embodiment of the present invention, the inhalation resistance per millimeter (mm) of the paper tube may be 0.1 mmH2O to 1.5 mmH2O. When included in the range of the inhalation resistance, smoke can flow smoothly during smoking, and the cigarette taste and smoking taste persistence can be improved.

[0074] According to an embodiment of the present invention, the paper tubes in the second filter rod 220 and the third filter rod 330 may be formed as follows: Figure 1 The structure shown.

[0075] According to an embodiment of the present invention, the woven filter rod may include polymer fibers, fibers cut from the flavoring sheet of the present invention, or both. Furthermore, the flavoring sheet of the present invention may be applied to the inner wall of the tubular filter rod. For example, the polymer may be polylactic acid (PLA), cellulose acetate (CA), polyethylene terephthalate (PET), etc.

[0076] According to one embodiment of the present invention, the first filter rod is a filter rod tow known in the field to which the present invention belongs, for example, it may include a fibrous, filamentary or both filter rod tow having at least one of polymer, paper, cellulose acetate, activated carbon and carbon, but is not limited thereto.

[0077] According to an embodiment of the present invention, the smoking material portion may include tobacco raw materials such as raw cut tobacco, a substrate for generating smoking flavor and aerosol, which may be configured according to the type of smoking article.

[0078] According to an embodiment of the present invention, the diameter of the smoking article may be 4 mm to 10 mm, the circumference may be 14 mm to 29 mm, and the length may be 45 mm to 100 mm.

[0079] Although the embodiments described above are described based on limited embodiments and drawings, a person of ordinary skill in the art can make various modifications and changes based on the above description. For example, the described techniques are performed in a different order than the described methods, and / or if the constituent elements in the described systems, architectures, devices, or circuits are combined or combined in different forms, or replaced or substituted by other constituent elements or equivalents, appropriate results can also be obtained. Therefore, other embodiments, other embodiments, and equivalents of the claims are all within the scope of the appended claims.

Claims

1. A smoking article, characterized in that The invention comprises a filter rod part having a paper tube for smoking articles, The paper tube for smoking articles comprises a flavoring sheet on the inner surface, the outer surface or both surfaces, The flavoring sheet comprises a cellulose-based polymer, a plasticizer, and a flavoring substance. The content of the cellulose-based polymer in the flavoring sheet is greater than 40% by weight and less than or equal to 60% by weight, The paper tube for smoking articles comprises: The first layer includes the flavoring sheet, and A second layer, used to wrap the first layer; A thickness ratio of the first layer to the second layer is 2.5:1 to 0.5:

1.

2. The smoking article according to claim 1, characterized in that The smoking article is a cigarette or an electronic cigarette and is of the cigarette type.

3. The smoking article according to claim 1, characterized in that The filter rod portion comprises: First filter rod; A second filter rod, comprising the smoking article paper tube; and The third filter rod includes a tubular structure.

4. The smoking article according to claim 3, characterized in that The first filter rod includes fibers, filaments, or both of at least one of polymer, paper, cellulose acetate, activated carbon, and carbon.

5. The smoking article according to claim 1, characterized in that The plasticizer comprises 1 to 20 wt % of the flavored sheet.

6. The smoking article according to claim 1, characterized in that The aroma substances account for 10% to 50% by weight of the aromatized sheet.

7. The smoking article according to claim 1, characterized in that The cellulose includes at least one selected from the group consisting of methyl cellulose, ethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose and agar.

8. The smoking article according to claim 1, characterized in that The plasticizer includes at least one selected from the group consisting of propylene glycol, polyethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, glycerol, and sorbitol.

9. The smoking article of claim 1, wherein: The inhalation resistance per millimeter length of the paper tube for smoking articles is 0.1 mmH2O to 1.5 mmH2O.

10. The smoking article of claim 1, wherein: The thickness of the flavoring sheet is 1 mm or less.

11. The smoking article of claim 1, wherein: The tensile strength of the flavoring sheet is 1.0 kgf / 15 mm or more.

12. The smoking article of claim 1, wherein: The circumference of the paper tube for smoking articles is 14 mm to 25 mm, and the length is more than 5 mm.

13. The smoking article of claim 1, wherein: The paper tube for smoking articles also includes: The third layer includes the flavoring sheet; A thickness ratio of the third layer to the second layer is 2.5:1 to 0.5:1.

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