Filter tip with liquid added, flavor smoking article having the filter tip, and flavor smoking article package

Abstract

The present invention addresses the problem of providing a filter tip that suppresses leakage of liquids with phenol filtration capabilities even after storage, and a fragrance-absorbing article incorporating such a filter tip. The present invention solves this problem with a filter tip for fragrance-absorbing articles comprising a filter material and a roll paper. The filter material contains biodegradable raw materials, the roll paper wraps the filter material, the filter material contains a liquid with phenol filtration capabilities, and the surface of the roll paper in contact with the filter material is made of a liquid-repellent layer.

Description

Technical Field

[0001] This invention relates to a filter tip containing liquid, a scented inhalation article having the filter tip, and packaging for the scented inhalation article. Background Technology

[0002] In cigarettes and other smoking products with filters, cellulose acetate is the most commonly used filter material. In recent years, from the perspective of reducing environmental burden, there has been a push to use biodegradable raw materials as filter materials in various products, and the use of biodegradable raw materials such as paper filters in smoking products has been explored. However, compared to filters using cellulose acetate, paper filters have lower filtration performance for irritating components such as phenols, making the cigarette taste more harsh. Therefore, efforts have been made to improve the taste by imbuing paper filters with the function of filtering irritating components such as phenols.

[0003] For example, Patent Document 1 discloses a filter tip with added triacetyl ester to reduce phenol content. On the other hand, filter tips containing liquid are prone to leakage during storage; therefore, Patent Document 1 reduces leakage by adding cellulose acetate. Additionally, Patent Document 2 sets the viscosity of the liquid to a predetermined value or uses roll paper with an impermeable layer.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: International Publication No. 2019 / 149742

[0007] Patent Document 2: Japanese Patent Application Publication No. 2020-36534 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] It is known that the method described in Patent Document 1 cannot adequately prevent liquid leakage, and sometimes liquid leaks from the filter tip into the roll paper and tipping paper due to storage. Furthermore, referring to Patent Document 2, even if a liquid-impermeable layer is formed on the roll paper, it is sometimes not sufficient to prevent liquid leakage.

[0010] As mentioned above, in the technologies described in the various patent documents, it is not possible to stably retain a liquid with phenol filtration capabilities added to the filter tip in the filter tip beforehand.

[0011] In this invention, a filter tip that suppresses leakage of liquids with phenol filtration capability even after storage is provided, and a fragrance inhalation article having the filter tip is provided.

[0012] Methods for solving problems

[0013] Through in-depth research, the inventors discovered that even when a liquid-impermeable layer is formed in the winding paper, after long-term storage, the liquid will still diffuse and leak along the surface of the winding paper towards the long axis of the filter tip. In contrast, by making the surface of the winding paper in contact with the filter material repellent to liquids with phenol filtration capabilities, leakage of phenol-filtering liquids can be suppressed, thus completing this invention.

[0014] That is, the present invention is as follows.

[0015] [1] A filter tip, which is used for fragrance-absorbing items.

[0016] The filter tip has filter media and roll paper, the filter media comprising biodegradable raw materials, and the roll paper wrapping the filter media.

[0017] The above filter media contains liquids with phenol filtration capabilities.

[0018] The surface of the aforementioned roll paper that contacts the filter material is formed of a layer that is liquid-repellent to the aforementioned liquid.

[0019] [2] According to the filter tip described in [1], the area of ​​the liquid relative to the liquid-repellent layer is 35 mm. 2 the following.

[0020] [3] According to the filter tip described in [1] or [2], wherein the winding paper is formed from a substrate and the liquid-repellent layer formed on the surface of the substrate that contacts the filter material.

[0021] [4] The filter according to any one of [1] to [3], wherein the liquid is selected from one or more of polypropylene glycol, polypropylene glycol glycerol ether, polybutylene glycol, diglycerol, sorbitol fatty acid ester, glycerol fatty acid ester, polyglycerol fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol, and caprylyl glycol.

[0022] [5] The filter according to any one of [1] to [4], wherein the liquid is polypropylene glycol with a molecular weight of 2,000 or more and 4,000 or less, polypropylene glycol glycerol ether with a molecular weight of 3,000 or more and 4,000 or less, or diglyceride.

[0023] [6] The filter according to any one of [1] to [5], wherein the liquid-repellent layer comprises one or more selected from starch, cellulose nanofibers, ethyl cellulose, nitrocellulose, gum arabic, aluminum, paraffin, polyethylene, polypropylene, polyvinyl alcohol, fluoropolymer, acrylic resin, and organosilicon.

[0024] [7] The filter according to any one of [1] to [6], wherein the liquid-repellent layer comprises one or more selected from ethyl cellulose, acrylic resin, paraffin wax, polyethylene, polypropylene, fluoropolymer, and organosilicon.

[0025] [8] The filter according to any one of [1] to [5], wherein the liquid-repellent layer is formed of liquid-repellent paper.

[0026] [9] A scented smoking article comprising: a cigarette rod wrapped in a roll of paper, a filter tip as described in any one of [1] to [8], and a splicing paper connecting the cigarette rod and the filter tip.

[0027]

[10] The scented inhalation article according to [9], wherein at least one of the roll paper or the tipping paper has a colored portion.

[0028]

[11] A scented inhalation product packaging, which is a scented inhalation product packaging containing the scented inhalation product described in [9] or

[10] , wherein the scented inhalation product is directly packaged by an inner wrapping paper, and at least the portion of the inner wrapping paper that contacts the filter tip of the scented inhalation product has a liquid-repellent layer that has the ability to filter liquids containing phenol.

[0029]

[12] According to the fragrance-absorbing packaging of

[11] , the liquid-repellent layer of the inner paper comprises one or more selected from starch, cellulose nanofibers, ethyl cellulose, nitrocellulose, gum arabic, aluminum, paraffin wax, polyethylene, polypropylene, polyvinyl alcohol, fluoropolymer, acrylic resin, and organosilicon.

[0030]

[13] The scented inhalable packaging according to

[11] or

[12] , wherein the liquid-repellent layer of the inner paper comprises one or more selected from ethyl cellulose, acrylic resin, paraffin wax, polyethylene, polypropylene, fluoropolymer, and organosilicon.

[0031] The effects of the invention

[0032] According to the present invention, a filter tip that suppresses leakage of liquids with phenol filtration capability even after storage, and a fragrance inhalation article having the filter tip, can be provided. Attached Figure Description

[0033] Figure 1 This is a schematic diagram illustrating a first configuration example of a fragrance-inhaling article according to an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram illustrating a second configuration example of a fragrance-inhaling article according to an embodiment of the present invention.

[0035] Figure 3This is a schematic diagram illustrating a third configuration example of a fragrance-inhaling article according to an embodiment of the present invention.

[0036] Figure 4 This is a graph showing the expanded area of ​​polypropylene glycol glycerol ether (PPG-GE) relative to each test raw material.

[0037] Figure 5 This is a graph showing the expanded area of ​​diglycerides relative to each test raw material.

[0038] Figure 6 This is a chart showing the phenol filtration capacity of each additive in a cigarette sample.

[0039] Symbol Explanation

[0040] 1. Smoking rod

[0041] 2. Filter media

[0042] 4. Roll up the paper

[0043] 5. Forming paper

[0044] 6. Receiving paper

[0045] 7. Filter tip Detailed Implementation

[0046] Hereinafter, embodiments and examples of the present invention will be described in detail. However, the present invention is not limited to the embodiments and examples described below, and may be implemented in any way without departing from the spirit of the present invention.

[0047] <Filter>

[0048] One embodiment of the present invention is a filter tip for fragrance-absorbing articles. The filter tip has a filter material and a roll paper. The filter material contains biodegradable raw materials. The roll paper rolls up the filter material. The filter material contains a liquid with phenol filtration capability. The surface of the roll paper in contact with the filter material is formed by a liquid-repellent layer (hereinafter also simply referred to as "liquid-repellent layer") that is repellent to the liquid.

[0049] While the roll paper with a liquid-impermeable layer described in Patent Document 2 can suppress leakage in the direction penetrating the liquid-impermeable layer, during long-term storage, the liquid will diffuse along the surface of the roll paper, and leakage from the ends of the roll paper cannot be prevented. On the other hand, for the filter tip of one embodiment of the present invention, by forming a layer with liquid-repellent properties against the liquid with phenol filtration capability on the surface of the roll paper, the diffusion of liquid on the surface of the roll paper is prevented, and leakage of liquid can be suppressed.

[0050] There are no particular restrictions on the shape of the filter tip. It can be set as a single filter tip containing a single filter tip segment, a double filter tip, or a triple filter tip, or a multi-segment filter tip containing multiple filter tip segments.

[0051] According to this embodiment, even a filter consisting of a single filter segment can adequately suppress liquid leakage.

[0052] There are no particular restrictions on the shape of the filter tip; any known shape can be used, typically a cylindrical shape, and the following methods can be employed.

[0053] In addition, the filter tip can be configured with hollow (hollow) cavities, grooves, or other components in the circumferential direction.

[0054] The cross-sectional shape of the filter tip in the direction orthogonal to its major axis is essentially circular. The diameter of this circle can be appropriately varied depending on the size of the product, typically 4.0 mm or more, preferably 4.5 mm or more, more preferably 5.0 mm or more, and typically 9.0 mm or less, preferably 8.5 mm or less, more preferably 8.0 mm or less. It should be noted that when the cross-section is not circular, the diameter mentioned above is assumed to be that of a circle with the same area as its cross-sectional area.

[0055] The circumference length of the cross section of the filter tip in the direction orthogonal to the major axis can be appropriately varied according to the size of the product being used. It is usually 14.0 mm or more, preferably 15.0 mm or more, more preferably 16.0 mm or more, and usually 27.0 mm or less, preferably 26.0 mm or less, more preferably 25.0 mm or less.

[0056] The length of the filter tip along its major axis can be varied according to the size of the product. It can be 5mm or more, 10mm or more, 15mm or more, 17.5mm or more, or 20.0mm or more. Alternatively, it can be less than 40mm, less than 35mm, less than 32.5mm, or less than 30.0mm.

[0057] There is no particular limitation on the air resistance per 120 mm along the axial direction of the filter tip. It is usually 100 mmH2O or more, preferably 150 mmH2O or more, more preferably 200 mmH2O or more, and usually 800 mmH2O or less, preferably 700 mmH2O or less, more preferably 600 mmH2O or less.

[0058] The airflow resistance of a filter tip is measured according to the ISO standard method (ISO 6565) using an airflow resistance tester, such as that manufactured by SelRean. The airflow resistance of a filter tip refers to the pressure difference between the first and second end faces when a given airflow rate (17.5 mL / s) flows from one end face (first end face) to the other end face (second end face) without air passing through the sides of the filter tip. The unit is usually expressed in mmH₂O. It should be noted that the airflow resistance of a filter tip is known to be proportional to its length within a commonly implemented length range (5 mm to 200 mm). If the length is doubled, the airflow resistance of the filter tip will double.

[0059] <Filter Media>

[0060] The filter tip of this embodiment contains a filter media comprising biodegradable raw materials. Biodegradable raw materials can be decomposed by microorganisms, thus minimizing environmental impact. Examples of biodegradable raw materials include: cellulose, polylactic acid, poly(3-hydroxybutyrate-copoly-3-hydroxyhexanoate), polylactic acid / polycaprolactone copolymer, polyglycolic acid, polylactic acid / polyether copolymer, butanediol / long-chain dicarboxylic acid copolymer, poly(adipate) / butylene terephthalate, polytetramethylene adipate-copoly-terephthalate, polyethylene terephthalate, polybutylene succinate, polybutylene adipate, polyvinyl alcohol, etc., with cellulose being particularly preferred. Filter tips using filter media containing cellulose are also called paper filter tips.

[0061] Cellulose-containing filter media are typically paper made from wood pulp. There are no particular restrictions on the type of wood pulp; pulp from coniferous or broadleaf trees can be used. Similarly, there are no particular restrictions on the type of paper used for the filter; pleated paper, corrugated paper, non-woven fabric, and shredded paper can all be used. Furthermore, the paper can be manufactured using either wet or dry methods, and the choice is open.

[0062] It should be noted that paper filter tips are more biodegradable than synthetic fiber tows such as cellulose acetate tows.

[0063] There are no particular limitations on the shape of the filter media constituting the filter tip. Examples include fibrous filter media aggregated together, sheet-like filter media aggregated together, and especially in paper filter tips, examples include paper aggregated together with a wavy structure having multiple valleys and ridges. When using paper with a wavy structure, the valleys (or ridges) are arranged so that their longitudinal direction is parallel to the long axis of the filter tip rod.

[0064] When using paper with the wavy structure described above as the filter material constituting the paper filter tip, the average distance (also called "average spacing") from valley to valley or from edge to edge of the wavy structure is not particularly limited. It is usually 0.5 mm or more, preferably 1.0 mm or more, and usually 5.0 mm or less, preferably 4.0 mm or less.

[0065] In addition, the average depth of the valley of the waveform of the paper filter tip is not particularly limited, but is usually 0.1 mm or more, preferably 0.2 mm or more, and usually 1.2 mm or less, preferably 1.0 mm or less.

[0066] Paper with a wavy structure can be made by performing a wrinkle treatment on a flat sheet of raw material that does not have a wavy shape to form mountains and valleys.

[0067] There is no particular limitation on the thickness of the raw material sheet, which is usually 20 μm or more, preferably 25 μm or more, more preferably 30 μm or more, and usually 140 μm or less, preferably 130 μm or less, more preferably 120 μm or less.

[0068] There are no particular restrictions on the unit area weight of the raw material sheet, but it is usually 20 gsm or more, preferably 25 gsm or more, and usually 120 gsm or less, preferably 80 gsm or less, and more preferably 45 gsm or less.

[0069] It should be noted that the weight per unit area can be adjusted by adjusting the pulp content and filler content mentioned above, or by adjusting the processing conditions of the wet paper machine.

[0070] The width of the raw material sheet is not particularly limited, but is typically 50 mm or more, preferably 100 mm or more, more preferably 170 mm or more, and is also 300 mm or less, preferably 250 mm or less, more preferably 230 mm or less. It should be noted that the width of the raw material sheet refers to the length in the paper with a wavy structure, perpendicular to the long axis direction of the continuously arranged mountain and valley sections. In other words, it is the length perpendicular to the direction corresponding to the long axis direction of the filter media, which is obtained by processing paper with a wavy structure.

[0071] The filter material used in this embodiment contains a liquid with phenol filtration capability. It should be noted that, in this specification, "liquid" refers to a liquid at atmospheric pressure and 25°C. By containing a liquid with phenol filtration capability in the filter material, it is possible to selectively remove given components, such as phenols, pyridines, and pyrazines, contained in cigarette smoke during smoking.

[0072] In the case of a multi-segment filter in this embodiment, it is sufficient that at least one filter segment contains a liquid with phenol filtration capability.

[0073] Liquids with phenol filtration capability are preferably non-volatile at 25°C, and more specifically, preferably have a vapor pressure of 0.2 Pa or less at 25°C.

[0074] In addition, the surface tension of the liquid with phenol filtration capability is not particularly limited, but from the viewpoint that it is less likely to leak from the filter, a higher surface tension is preferred.

[0075] Examples of liquids capable of filtering phenols include: polypropylene glycol, polypropylene glycol glycerol ether, polyethylene glycol, diglycerol, polybutylene glycol, caprylyl glycol, sorbitol fatty acid esters, glycerol fatty acid esters, polyglycerol fatty acid esters, propylene glycol fatty acid esters, and copolymers thereof. Among these, polypropylene glycol, polypropylene glycol glycerol ether, diglycerol, polybutylene glycol, sorbitol fatty acid esters, glycerol fatty acid esters, and polyglycerol fatty acid esters are preferred, and polypropylene glycol, polypropylene glycol glycerol ether, and polybutylene glycol are particularly preferred. These can be used alone or in mixtures of two or more in any ratio.

[0076] When the liquid with phenol filtration capability is polypropylene glycol or polypropylene glycol glycerol ether, its molecular weight is preferably 1000 or more, more preferably 2000 or more, and particularly preferably 3000 or more. On the other hand, there is no particular upper limit, and 10000 or less can be cited as an example. Considering the tendency to have a small impact on ink smudging, polypropylene glycol and polypropylene glycol glycerol ether with a large molecular weight are preferred.

[0077] The content of the phenol-filtering liquid in the filter material is preferably 1 mg or more, more preferably 5 mg or more, and particularly preferably 10 mg or more relative to the entire filter tip including the filter material and the winding paper. Furthermore, it is preferably 250 mg or less, more preferably 50 mg or less, and particularly preferably 30 mg or less. By keeping the amount of phenol-filtering liquid within this range, it is ensured that specific components in the tobacco smoke are selectively removed during use. Furthermore, the airflow resistance of the filter tip is not significantly altered, and the manufacturing adaptability of the filter tip is not significantly impaired. It should be noted that the above-mentioned content range can refer to the range when the above-described examples are used alone, or it can refer to the total amount when multiple examples are used in combination.

[0078] In this embodiment, known additives such as thickeners, fragrances, and colorants can be added to the liquid with phenol filtration capability.

[0079] By including a thickener, leakage of the liquid added to the filter tip can be effectively prevented, and the appearance can be well maintained.

[0080] As a type of thickener, it can be used without particular restrictions as long as it is dissolved in the above-mentioned liquids and water that have phenol filtration capabilities. Examples include: xanthan gum, gellan gum, psyllium husk gum, pectin, carboxymethyl cellulose, hydroxypropyl cellulose, polyvinyl alcohol, agarose, pullulan, alginic acid, polyacrylic acid, carbamate compounds, and their alkali metal salts or alkaline earth metal salts.

[0081] Carboxymethyl cellulose is a preferred example.

[0082] The content of thickener in filter media varies depending on its type, and can be exemplified as 0.5 to 200 mg per filter tip. Alternatively, when carboxymethyl cellulose is used, the average amount per filter tip can be 10 to 150 mg.

[0083] Filter media containing liquids with phenol filtration capabilities can be obtained by adding a solution containing the aforementioned liquid to the filter media.

[0084] Examples of liquids with phenol filtration capabilities in the solution added to the filter media include 10 to 100% by weight. That is, the liquid can be added to the filter media in monomeric form or in the form of a solution further containing other additives. It should be noted that even when the liquid is added in monomeric form, it may sometimes contain impurities such as water.

[0085] Regarding the thickener, depending on its type, examples of it being present in the above solution are 1 to 80% by weight. The above solution may also contain water. Examples of water content in the above solution are 4 to 30% by weight.

[0086] The concentrations of the above components can be adjusted appropriately so that the content of liquid with phenol filtration capacity in the stored filter material is 1-250 mg / filter tip.

[0087] The viscosity of the solution used in this invention is not particularly limited as long as it is within the range that does not significantly impair the manufacturing suitability of the filter tip, as long as it is sufficient to be added to the filter material and remain inside the filter tip.

[0088] For example, the viscosity at 25°C can be above 10 mPa·s, preferably above 100 mPa·s, and the viscosity at 80°C can be below 1000 mPa·s.

[0089] There are no particular restrictions on the method of adding the above solution to the filter media; known methods can be used. Examples include using a pressure pump for liquid delivery or spraying. When the filter media constituting the filter nozzle contains multiple raw materials, the solution can be added to a portion of the raw materials or to all of them. Alternatively, it can be added to a portion of the filter media or added substantially uniformly to the entire filter media. The amount of the above solution added can be 1–250 mg / 10 mm. If the amount of solution added to the filter media exceeds 250 mg / 10 mm, leakage or seepage of the solution may occur when the filter nozzle is deformed by applying external force.

[0090] It should be noted that the "10mm" used in the unit of solution addition refers to 10mm in the length direction of the filter tip, and mg / 10mm refers to the average weight (mg) of the solution per 10mm in the length direction of the filter tip.

[0091] In addition to biodegradable raw materials, the aforementioned phenol-filtering liquid, and thickeners, the filter media may also include a breakable additive release container (also referred to as a "capsule" in this technical field) containing a breakable shell such as activated carbon or gelatin. When the capsule is broken by the user of the fragrance inhaler before, during, or after use, the additive contained within the capsule is released. Subsequently, part or all of the additive is transferred to the airflow passing through the fragrance inhaler during use and to the filter media after use.

[0092] The capsule's form is not particularly limited; for example, it can be a fragile capsule, preferably spherical. The additives contained in the capsule are not particularly limited, but fragrance and activated charcoal are preferred. Additionally, as an additive, a liquid with phenol filtration capabilities as described above can be included. The form of the additive is not particularly limited, and it is generally liquid or solid. It should be noted that the use of capsules containing additives is known in the art. Fragile capsules and their manufacturing methods are known in the art. Furthermore, known substances can be used for fragrance and activated charcoal.

[0093] <Roll Paper>

[0094] The filter tip of this embodiment has a roll paper for packaging filter media. When the filter tip is a multi-segment filter tip, it is preferable to roll the roll paper to package two or more segments together. On the other hand, when the roll paper packages two or more segments separately, forming paper can be used to fix multiple filter tip segments.

[0095] There are no particular restrictions on the method of paper winding, and it can include more than one row of seams containing adhesive. The adhesive may include a hot-melt adhesive. Additionally, the adhesive may contain polyvinyl alcohol.

[0096] There are no particular restrictions on the material of the roll paper; well-known materials can be used. In addition, it can contain fillers such as calcium carbonate.

[0097] There is no particular limitation on the thickness of the roll paper, but it is usually 20 μm or more, preferably 30 μm or more. In addition, it is usually 140 μm or less, preferably 130 μm or less, and more preferably 120 μm or less.

[0098] There is no particular limitation on the weight per unit area of ​​the rolled paper, but it is generally 20 gsm or more, preferably 22 gsm or more, and more preferably 23 gsm or more. In addition, it is generally 100 gsm or less, preferably 95 gsm or less, and more preferably 90 gsm or less.

[0099] The surface of the winding paper that contacts the filter material is formed of a liquid-repellent layer. By forming the surface of the winding paper that contacts the filter material with a liquid-repellent layer that is capable of filtering phenols, it is possible to suppress the diffusion of liquid along the surface of the winding paper during storage. By adopting this method, the liquid can be pre-retained in the filter tip even without holding it on a carrier such as silica gel or encapsulating it in a component such as a capsule.

[0100] The aforementioned liquid-repellent roll paper can consist solely of a liquid-repellent layer, or it can be formed from a substrate and a liquid-repellent layer. When the roll paper is formed from a substrate and a liquid-repellent layer, a coating agent can be laminated onto the surface of the substrate using methods such as coating or vapor deposition, thereby imparting liquid repellency to the substrate against liquids capable of filtering phenols. This coating agent comprises a material constituting the liquid-repellent layer described later for filtering phenols. As the substrate, known paper used for roll paper, nonwoven fabrics formed from materials such as polymers, etc., can be used. Furthermore, by increasing the beating degree of the substrate raw material and performing calendering, paper with improved oil and water resistance (also called "liquid-repellent paper") that controls surface smoothness and density can be used alone as the liquid-repellent layer. Alternatively, liquid-repellent paper can be used as the substrate, and the aforementioned liquid-repellent layer can be further laminated. Examples of liquid-repellent paper include cellophane.

[0101] Furthermore, from the viewpoint of manufacturing adaptability, it is preferable that the liquid-repellent layer is uniform, but it is not limited to this. The materials constituting the liquid-repellent layer can be partially different, and the thickness of the liquid-repellent layer can also be different.

[0102] As a material constituting a liquid-repellent layer for the liquids with phenol filtration capabilities described above, one or more materials selected from polymers, metals, and inorganic oxides may be listed.

[0103] Examples of polymeric compounds include: polysaccharides, paraffin wax, polyolefins, polystyrene, polyvinyl compounds, fluoropolymers, acrylic resins, natural rubber, synthetic rubber, organosilicon, natural resins, alkyd resins, and urethane compounds. Examples of polysaccharides include: starch, cellulose, ethyl cellulose, acetyl cellulose, nitrocellulose, and gum arabic. Examples of polyolefins include: polyethylene and polypropylene. Examples of polyvinyl compounds include: polyvinyl alcohol, polyvinyl acetate, and polyvinyl chloride. Examples of fluoropolymers include: perfluoroalkyl compounds, and more specifically, polytetrafluoroethylene. Examples of acrylic resins include: polymethyl acrylate and polymethyl methacrylate. Examples of synthetic rubbers include: polybutadiene. Examples of organosilicon include: polydimethylsiloxane. Furthermore, the materials constituting the liquid-repellent layer can be copolymers of these polymeric compounds.

[0104] Cellulose is particularly preferred to be cellulose nanofibers.

[0105] Examples of metals include aluminum.

[0106] Examples of inorganic oxides include silicon dioxide and aluminum oxide.

[0107] Preferably, the material is selected from one or more of starch, cellulose nanofibers, ethyl cellulose, nitrocellulose, gum arabic, aluminum, paraffin wax, polyethylene, polypropylene, polyvinyl alcohol, fluoropolymer, acrylic resin, and organosilicon; more preferably, it is selected from one or more of ethyl cellulose, acrylic resin, paraffin wax, polyethylene, polypropylene, fluoropolymer, and organosilicon.

[0108] Depending on the type of liquid with phenol filtration capability used, the material constituting the liquid-repellent layer can be appropriately selected from the above materials as having moderate liquid-repellent properties to that liquid.

[0109] For example, when starch or aluminum is used in the above materials, the liquid with phenol filtration capability is preferably selected from diglycerides, dehydrated sorbitol fatty acid esters, glycerol fatty acid esters, polyglycerol fatty acid esters, etc., and has a surface tension greater than that of polypropylene glycol glycerol ether.

[0110] Furthermore, when perfluoroalkyl compounds, polypropylene, paraffin, organosilicon, or cellulose nanofibers are used in the above-mentioned materials, the expanded area can reach 35 mm² as described below. 2 The following combinations may be selected from polypropylene glycol, polypropylene glycol glycerol ether, polybutylene glycol, diglycerol dehydrated sorbitol fatty acid ester, glycerol fatty acid ester, polyglycerol fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol, caprylyl glycol, etc.

[0111] When the surface tension of a liquid is high, it tends to spread less easily on the surface of the paper being wound.

[0112] It should be noted that surface tension can be measured, for example, by the pendant drop method (ds / de method). Specifically, liquid is extruded from the tip of a vertically downward-pointing capillary tube, and the surface tension is calculated based on the shape of the resulting droplet (pendant). The calculation uses the maximum diameter of the pendant (equatorial plane diameter) de, and the diameter of the pendant at the point de from the bottom of the droplet as it rises only.

[0113] 10 mg of a liquid with phenol filtration capability is added dropwise to the above-mentioned liquid-repellent layer. After standing in a room at 22°C and 60% RH for 30 minutes, the preferably expanded area of ​​the liquid (hereinafter sometimes simply referred to as "expanded area") is 60 mm². 2 The following is preferred: 35mm 2 When the expanded area is within the above range, the liquid added to the filter material diffuses along the surface of the roll paper, which can suppress leakage from the end of the roll paper.

[0114] The aforementioned expanded area can be determined by the following method: 10 mg of a phenol-filtering liquid is added dropwise to the test raw material using a microsyringe. An image of the liquid is acquired using a Keyence digital microscope (VHX-100) after 30 minutes of expansion in an indoor environment at 22°C and 60% RH. Based on the acquired image, the periphery of the expanded liquid is manually identified, and the area enclosed by the identified periphery is calculated.

[0115] There is no particular limitation on the average thickness of the liquid-repellent layer, which can be appropriately set by combining the substrate with the liquid-repellent layer.

[0116] Examples of average thicknesses for the liquid-repellent layer include 5 to 30 μm. Furthermore, when a liquid-repellent layer is provided on a substrate, a material with a liquid-repellent layer thickness of approximately 0.01 to 1.0 when the substrate thickness is set to 1 can be used.

[0117] Furthermore, when the above-mentioned layer is formed by applying a coating agent, the coating amount can be appropriately adjusted to achieve the aforementioned thickness. From a manufacturing cost perspective, a smaller coating amount is preferable, provided there are no issues with liquid repellency or manufacturing adaptability. However, there is a risk of liquid leakage from uncoated areas, therefore, a layer needs to be formed over the entire substrate area.

[0118] Furthermore, there are no particular limitations on the material, thickness, and weight per unit area of ​​the formed paper; examples similar to the rolled paper described above can be used. Additionally, at least a portion of the formed paper can be liquid-repellent to liquids with phenol filtration capabilities.

[0119] <Method for manufacturing filters>

[0120] There is no particular limitation on the manufacturing method of the filter tip; it can be manufactured using known methods. For example, when the filter tip is a paper filter tip, it can be manufactured by forming a filter tip rod using paper obtained from wood pulp. Specifically, for example, for paper obtained from papermaking, the paper can be given a wavy shape through wrinkling treatment or the like, and then the paper with the wavy structure can be gathered together, rolled into a rod shape by a paper winding machine, and cut to the desired length to manufacture a paper filter tip.

[0121] As a papermaking machine, existing and well-known papermaking machines such as cylinder papermaking machines, inclined short-wire papermaking machines, long-wire papermaking machines, and short-wire papermaking machines can be used, and the papermaking machines can be appropriately combined according to the required characteristics. In addition, dry manufacturing methods such as resin-bonded nonwoven fabrics, thermally bonded nonwoven fabrics, and spunlace nonwoven fabrics can also be used appropriately.

[0122] Other than paper filter tips, filter tips can be manufactured by forming the raw materials into sheets and then following the manufacturing method for paper filter tips described above. Alternatively, fibrous raw materials can be aggregated, rolled into a rod shape using a paper roll, and then cut to the desired length to manufacture a filter tip.

[0123] Liquids with phenol filtration capabilities can be added at any stage of the process; for example, they can be added to filter media after pleating and before it is formed into a rod shape. Alternatively, for filter media already formed into a rod shape, liquids with phenol filtration capabilities can be added using a microsyringe.

[0124] <Fragrance-absorbing items>

[0125] Another embodiment of the present invention is a scented smoking article comprising: a cigarette rod wrapped in toilet paper, the aforementioned filter tip, and a splicing paper connecting the cigarette rod and the aforementioned filter tip.

[0126] In this instruction manual, "fragrant inhalation articles" refers to a general term for inhalation articles in which the user enjoys the aroma of tobacco or other fragrances. More specifically, fragrant inhalation articles may include: combustible fragrant inhalation articles that provide the user with aroma by burning a fragrance source; non-combustible heated fragrant inhalation articles that provide the user with aroma by heating a fragrance source without burning it; and non-combustible, non-heated fragrant inhalation articles that provide the user with aroma produced by a fragrance source without heating or burning it.

[0127] <Smoking pipe>

[0128] The tobacco pipe can be made in any known manner without particular restrictions, and is usually made by rolling tobacco filling with paper. There are no special limitations on the tobacco filling; known materials such as shredded tobacco and recycled tobacco sheets can be used. It should be noted that in this instruction manual, "paper" refers to the paper used to roll the tobacco filling, as opposed to the paper used to roll filter media.

[0129] The moisture content of the tobacco fillers, such as tobacco shreds, in the cigarette holder can be 10-15% by weight, preferably 11-13% by weight. At such a moisture content, the occurrence of rolling dyeing can be suppressed, and the rolling adaptability during the manufacture of flavored smoking articles becomes good.

[0130] Additionally, in the case of flavored vaping articles that are non-combustible heated flavored vaping articles, the tobacco filler may include an aerosol base material. The aerosol base material is a base material that generates an aerosol through heating; examples include glycerin, propylene glycol, and mixtures thereof.

[0131] There are no particular restrictions on the material of the paper used for filling tobacco rolls; known materials can be used. In addition, it can contain fillers such as calcium carbonate.

[0132] In addition, similar to the aforementioned roll paper, at least a portion of the roll paper can be made liquid-repellent to the aforementioned liquid with phenol filtration capability.

[0133] <Contact Sheet>

[0134] There are no particular restrictions on the material of the splicing paper connecting the above-mentioned cigarette rod and the above-mentioned filter tip; known materials can be used. In addition, it can contain fillers such as calcium carbonate.

[0135] In addition, similar to the aforementioned roll paper, at least a portion of the tipping paper can be made liquid-repellent to the aforementioned liquid with phenol filtration capability.

[0136] When at least one of the roll paper or tipped paper has a colored portion, leakage or seepage of liquid added to the filter tip can cause the ink or other substances used in the colored portion to bleed through, and the bleed ink may further detach (also known as ink detachment), significantly damaging the appearance of the scented inhalation article. Therefore, the above-described filter tip can be suitably used in scented inhalation articles where at least one of the roll paper or tipped paper has a colored portion.

[0137] Hereinafter, an example of the scented inhalation article of this embodiment will be described using the accompanying drawings. However, the present invention is not limited to the following method and may be implemented with appropriate modifications without departing from the scope of the present invention.

[0138] Figures 1-3 This is a schematic diagram of a combustible flavored vape (cigarette) with a single or multi-section filter. Figure 1In this process, each filter element formed from the filter media 2 is wound together by the wound paper 4 to form the filter 7. Furthermore, in... Figure 2 and 3 In this multi-section filter case, all filter components of the rolled paper 4 are rolled by the forming paper 5, thus forming the filter 7. Furthermore, the filter 7 is connected to the cigarette stem 1 by the splicing paper 6.

[0139] Even if the filter used in this invention is as follows Figure 1 Even with a single filter segment, leakage of liquid can be suppressed. That is, the filter containing liquid can be adjacent to the tobacco stem. On the other hand, it can be considered that when the filter is a multi-segment filter, if the above-mentioned solution is added only to the filter segment that is not connected to the tobacco stem among two or more filter components, it is more effective to prevent the solution from seeping or leaking into the tobacco or tobacco paper that makes up the tobacco stem.

[0140] Specifically, the solution can be added to a filter element marked with an asterisk (*), preferably to the filter element at the end forming the suction port. Figure 2 Furthermore, when there are three or more filter components, it is also possible to add the above solution only to the filter component that is not part of the mouthpiece, i.e., the filter component that forms the middle section of the axial direction, instead of adding it to the filter component that is connected to the cigarette stem. Figure 3 ).

[0141] In this invention, not only is it as follows Figures 1-3 As shown, the filter elements are continuously present in the axial direction. Another example is a filter element without any other element connected to the suction end of the filter, i.e., a gap (also called a cavity) exists between the filter elements. This cavity can be formed by shaping the forming paper and tipping paper into a cylindrical shape. In this case, the forming paper or the like forming the cavity does not necessarily need to have a liquid-repellent layer that can filter phenol-containing liquids.

[0142] The tipping paper used in this invention can be provided with ventilation holes for adjusting the ratio of mainstream tobacco smoke to air inhaled during smoking (in... Figures 1-3 (The portion shown in dashed lines on the tipping paper shown in Figure 6). There are no particular restrictions on the arrangement of the ventilation holes; for example, they can be arranged in one or two rows along the circumference of the cigarette. Furthermore, there are no particular restrictions on the spacing, size, or method of opening the ventilation holes.

[0143] Regarding the location of the ventilation holes, it is preferable to position them at least 2 mm away from the end of the filter tip containing the specific solution on the stem side towards the inhalation end side. This is expected to improve the cigarette flavor. Furthermore, from the viewpoint of preventing liquid leakage, it is preferable that there are no ventilation holes on the filter tip containing the aforementioned solution, or between the filter tip components.

[0144] <Fragrance-Enhanced Packaging Products>

[0145] When providing the scented inhalation article of this embodiment to a user, the scented inhalation article packaging is usually made by filling the scented inhalation article into a known packaging.

[0146] In the aforementioned scented inhaler packaging, it is preferable that the scented inhaler is directly wrapped in inner paper, and that at least the portion of the inner paper in contact with the filter tip of the scented inhaler has a liquid-repellent layer. Particularly preferably, the portion of the inner paper in contact with the end face of the filter tip on the suction side has a liquid-repellent layer.

[0147] The fragrance-absorbing article of this embodiment has a filter tip containing the aforementioned specific liquid. By using the liquid-repellent side of the roll paper for wrapping, its function can be fully utilized when filled into a package. That is, since the liquid does not easily diffuse within the package, it is expected that the liquid will not easily evaporate from the filter tip.

[0148] Furthermore, by providing a liquid-repellent layer on the portion of the inner wrapping paper that contacts the filter tip of the fragrance-absorbing article, it is possible to prevent the liquid from leaking out of the filter material and spreading to the inner wrapping paper.

[0149] The shape and volume of the packaging used to fill the fragrance inhalation article of this embodiment are not limited, and existing methods can be used.

[0150] For example, a preferred volume range for packaging is 30–150 cm³. 3 .

[0151] The number of scented inhalers filled in the packaging is usually 20, but this can be adjusted according to the shape and size of the packaging.

[0152] The inner wrapping paper can consist solely of a liquid-repellent layer, or it can be formed from a substrate and a liquid-repellent layer. When the inner wrapping paper is formed from a substrate and a liquid-repellent layer, a liquid-resistant agent can be laminated onto the surface of the substrate using methods such as coating or vapor deposition, thereby imparting liquid-repellent properties to the substrate against liquids capable of filtering phenols. The substrate can be any known paper used for the inner wrapping paper, or a nonwoven fabric formed from materials such as polymers. Alternatively, liquid-repellent paper can be used alone as the liquid-repellent layer, or liquid-repellent paper can be used as the substrate and further laminated with the aforementioned liquid-repellent layer.

[0153] As a material constituting the liquid-repellent layer described above, the same material as the aforementioned roll paper can be cited. It should be noted that the material constituting the liquid-repellent layer in the inner wrapping paper may be the same as or different from the material used in the aforementioned roll paper.

[0154] Example

[0155] The invention will be described in more detail through embodiments. The invention is not limited to the following embodiments as long as it does not depart from its spirit.

[0156] <Liquid Spread Test>

[0157] In an indoor environment with a temperature of 22°C and a humidity of 60% RH, 10 mg of additive was added dropwise to the test material using a microsyringe, and the droplet expansion area was measured after 30 minutes. Polypropylene glycol glycerol ether (PPG-GE, molecular weight 4000) and diglycerides were used as additives in the experiment. Other test materials used included ordinary paper for rolling, as well as commercially available starch-coated paper, fluoropolymer (containing perfluoroalkyl compounds) coated paper, cellophane (manufactured by Yoshiyo), aluminum foil (manufactured by Mitsubishi Aluminum), polypropylene film (manufactured by Nippon Production Co., Ltd.), polyethylene-coated paper (manufactured by Fukusuke Kogyo Co., Ltd.), paraffin-coated paper (manufactured by Kojima Seijiro Honpo), silicone-coated paper (manufactured by Nippon Paper Crecia), cellulose nanofiber membrane (manufactured by Chuetsu Pulp & Paper), nitrocellulose-coated paper, ethyl cellulose-coated paper, acrylic resin-coated paper, polyvinyl alcohol-coated paper, and gum arabic-coated paper. It should be noted that immediately after the droplet was added, it spread on the test material, but except for ordinary paper, the spread of the droplet reached a stable state after 30 minutes under any conditions.

[0158] The area of ​​droplet spread on the test material was calculated using image processing. The droplet spread was measured using a Keyence digital microscope (VHX-100). The microscope was set to 5x magnification to allow for precise focus adjustment based on the level of the standard scale. Calibration of the apparatus was performed by specifying a 10mm range of the standard scale as the standard length using the accompanying software. 10mg of additive was added to a test material approximately 3cm square. Thirty minutes after the spread stabilized, the test material was photographed from above using the digital microscope. At this point, the level of illumination was adjusted to clearly identify the outer periphery of the added additive droplet. The spread area was calculated by precisely specifying the outer periphery of the additive droplet using the measurement-manual-polygon mode in the accompanying software.

[0159] The average of the expanded area from three measurements and the 95% confidence interval (95% CI) are shown in Table 1. Additionally, the results using PPG-GE are presented in... Figure 4 The results using diglycerides are shown in Figure 5 It should be noted that, Figure 4 , 5 The dashed line in the figure represents an expanded area of ​​36.3 mm². 2 The location.

[0160] According to Table 1, Figure 4 , 5 It can be seen that the liquid spread of the test raw material with a liquid-repellent layer is significantly suppressed.

[0161] [Table 1]

[0162]

[0163] <Cigarette Storage Experiment>

[0164] The raw material for the paper filter was made from wood pulp paper with a width of 220 mm. After giving the paper a wavy pleat, polypropylene glycol glycerol ether (PPG-GE, molecular weight 4000) was added to one side of the raw material roll by pressurized spraying at an average rate of 25 mg per 27 mm of raw material roll length. The paper with the added material was overlapped to form multiple airflow paths extending from one end to the other, and rolled into a rod shape using ordinary paper (28 gsm / sm), starch-coated paper (25 gsm / sm), or paper coated with fluoropolymer (containing perfluoroalkyl compounds) (28 gsm / sm), and then cut to a length of 108 mm to form a paper filter. It should be noted that the above coating was applied to one side, and the coated side was rolled up with the inside (i.e., the side in contact with the raw material roll) as the inside. After the manufactured paper filter and cigarette rod were cut to a given length, they were connected using a splicing paper to form a paper cigarette. Here, the tobacco, rolling paper, and tipping paper used in the cigarette holders were made of the same materials as commercially available Winston (registered trademark). Twenty cigarettes of each type were sealed in small boxes and stored at room temperature for four months. The liquid contamination on the rolling paper of the stored cigarettes was visually evaluated, and the contamination rate was calculated based on the number of contaminated cigarettes out of every 20 cigarettes.

[0165] The results are shown in Table 2 below.

[0166] [Table 2]

[0167] Add liquid coating Number of contaminated cigarettes Incidence of contaminated cigarettes Comparative Example 1 PPG-GE none 19 95％ Example 1 PPG-GE starch 2 10％ Example 2 PPG-GE Perfluoroalkyl compounds 0 0％

[0168] As shown in Table 2, by incorporating a liquid-repellent layer into the roll paper, liquid leakage can be suppressed. Specifically, in the aforementioned liquid spread test, the spread area was approximately 50 mm². 2 The combination of PPG-GE and starch can reduce the incidence of contaminated cigarettes by up to 10%. Additionally, in an area of ​​35 mm²... 2 No contamination occurred in the following combinations of PPG-GE with perfluoroalkyl compounds.

[0169] <Ink Effect Test>

[0170] Using a microsyringe, 10 mg of each of the liquids described below were dropped onto the printed surface of the cork-textured tipping paper. The degree of ink fading after wiping off the liquids with KimWipe S-200 (manufactured by Nippon Paper Crecia) after 1 minute was evaluated according to the four levels A to D shown below.

[0171] A: There is virtually no ink loss that can be identified, and the appearance is undamaged.

[0172] B: There is some ink flaking, but the appearance is basically undamaged.

[0173] C: Ink peeling and damage to appearance are present.

[0174] D: Significant ink loss and obvious damage to the appearance.

[0175] The liquids used are triacetin, polyethylene glycol (molecular weight 600), polypropylene glycol (molecular weight 700, 1000, 2000, 3000), polypropylene glycol glycerol ether (molecular weight 500, 1000, 3000, 4000), polybutylene glycol (molecular weight 500, 700), diglycerides, and caprylyl glycol.

[0176] The results are shown in Table 3 below.

[0177] [Table 3]

[0178] Ink peeling degree Triacetin D Polyethylene glycol (molecular weight 600) D Polypropylene glycol (molecular weight 700) C Polypropylene glycol (molecular weight 1000) B Polypropylene glycol (molecular weight 2000) A Polypropylene glycol (molecular weight 3000) A Polypropylene glycol glycerol ether (molecular weight 500) C Polypropylene glycol glycerol ether (molecular weight 1000) B Polypropylene glycol glycerol ether (molecular weight 3000) A Polypropylene glycol glycerol ether (molecular weight 4000) A Polybutanediol (molecular weight 500) B Polybutanediol (molecular weight 700) B diglycerides A Caprylyl glycol A

[0179] As shown in Table 3, the effect on ink detachment varies depending on the liquid. Furthermore, it is known that liquids with a high degree of polymerization (high molecular weight) have a smaller impact on ink detachment. In this invention, seepage or leakage of the liquid added to the filter tip can be effectively suppressed. On the other hand, even if the liquid added to the filter tip adheres in a small amount to the colored roll paper or tipping paper during manufacturing, damage to the appearance of the fragrance-absorbing product due to ink detachment can be suppressed when using polypropylene glycol with a molecular weight of 1000 or higher, polypropylene glycol glycerol ether with a molecular weight of 1000 or higher, polybutanediol with a molecular weight of 500 or higher, diglyceride, or caprylyl glycol as the liquid added to the filter tip.

[0180] <Test on phenol filtration capacity>

[0181] As described below, cigarette samples were produced.

[0182] First, paper filters with a length of 27mm and a diameter of 7.7mm were prepared. Specifically, the paper (40g / m²) with wavy pleats was first processed to create multiple airflow paths extending from one end to the other. 2The filter rods were made by overlapping layers of paper, rolling them with ordinary paper, and cutting them to a length of 120mm. It should be noted that the air resistance of the filter rods was adjusted to 400mmH2O, and the filter diameter was adjusted to 7.7mmφ. The filter rods were then cut to a length of 27mm, and 25mg of commercially available additives were added using a microsyringe. After being stored at room temperature for at least 2 days to allow the additive distribution within the filter to stabilize, they were used as experimental paper filters. The additives used included polypropylene glycol (molecular weight 2000), polypropylene glycol glycerol ether (molecular weight 4000), polyethylene glycol (molecular weight 600), diglycerides, polybutylene glycol (molecular weight 700), caprylyl glycol, sorbitol fatty acid esters (sorbitol monooleate), glycerol fatty acid esters (glycerol diacetate monolaurate), polyglycerol fatty acid esters (polyglycerol trilaurate), or propylene glycol fatty acid esters (propylene glycol monopalmitate). Then, commercially available Winston cigarette holders were combined with the aforementioned filters to create cigarette samples of various levels.

[0183] Smoking tests and analyses were conducted on the above-mentioned cigarette samples under the following conditions.

[0184] Cigarette samples were automatically smoked using an automatic smoking machine (Cerulean SM410) under the conditions of a smoking volume of 17.5 mL / s, a smoking time of 2 seconds / puff, and a smoking frequency of 1 puff / min. Tobacco particulate matter (TPM) in the tobacco smoke was collected using a Cambridge filter (Borgwaldt 44 mmφ). The TPM amount was determined by the mass difference of the Cambridge filter before and after smoking. The Cambridge filter was then immersed in 10 mL of the phenol extraction solvent shown in Table 4 below, placed in a screw-top vial, and shaken to obtain the analytical sample. 1 μL of the analytical sample was collected using a microsyringe and analyzed by gas chromatography-mass selective detection (GC-MSD). An Agilent G7890A (Agilent Technologies Inc.) was used as the GC, and an Agilent 5795C (Agilent Technologies Inc.) was used as the MSD.

[0185] [Table 4]

[0186] compound concentration solvent tert-butyl methyl ether － Internal Standard o-chlorophenol 10.7 μg / mL

[0187] Using the methods described above, the average TPM (Total Physical PM) and phenol content in the tobacco smoke of each cigarette sample were measured. The phenol content in the tobacco smoke was divided by the TPM, and then benchmarked against the values ​​of unadulterated paper filters to evaluate the phenol filtration capacity of the additives. The mean and standard deviation of the three evaluation results are shown in the figure. Figure 6 .

[0188] like Figure 6 As shown, polypropylene glycol (molecular weight 2000), polypropylene glycol glycerol ether (molecular weight 4000), polyethylene glycol (molecular weight 600), diglyceride, polybutylene glycol (molecular weight 700), caprylyl glycol, sorbitol fatty acid ester (sorbitol monooleate), glycerol fatty acid ester (glyceryl diacetate monolaurate), polyglycerol fatty acid ester (polyglycerol trilaurate), and propylene glycol fatty acid ester (propylene glycol monopalmitate) all have phenol filtration capabilities. Among them, polypropylene glycol (molecular weight 2000), polypropylene glycol glycerol ether (molecular weight 4000), polyethylene glycol (molecular weight 600), diglyceride, polybutylene glycol (molecular weight 700), glycerol fatty acid ester (glyceryl diacetate monolaurate), and polyglycerol fatty acid ester (polyglycerol trilaurate) have high phenol filtration capabilities, especially polypropylene glycol (molecular weight 2000), polypropylene glycol glycerol ether (molecular weight 4000), and polybutylene glycol (molecular weight 700).

Claims

1. A filter tip for use in fragrance-absorbing items. The filter tip has filter media and roll paper, the filter media comprising biodegradable raw materials, and the roll paper wrapping the filter media. The filter media contains a liquid with phenol filtration capabilities. The surface of the roll paper that contacts the filter material is made of a liquid-repellent layer. The liquid is selected from one or more of the following: polypropylene glycol with a molecular weight of 2000 or more and 4000 or less, polypropylene glycol glycerol ether with a molecular weight of 3000 or more and 4000 or less, and octyl glycol. The liquid-repellent layer comprises one or more selected from starch, cellulose nanofibers, ethyl cellulose, nitrocellulose, gum arabic, aluminum, paraffin wax, polyethylene, polypropylene, polyvinyl alcohol, fluoropolymers, acrylic resins, and organosilicon.

2. The filter tip according to claim 1, wherein, The area of ​​the liquid relative to the liquid-repellent layer is 35 mm. 2 the following.

3. The filter tip according to claim 1 or 2, wherein, The roll paper is made of a substrate and a liquid-repellent layer formed on the surface of the substrate that contacts the filter material.

4. The filter tip according to claim 1 or 2, wherein, The liquid-repellent layer comprises one or more selected from ethyl cellulose, acrylic resin, paraffin wax, polyethylene, polypropylene, fluoropolymer, and organosilicon.

5. The filter tip according to claim 1 or 2, wherein, The liquid-repellent layer is made of liquid-repellent paper.

6. A scented inhalation product, comprising: A cigarette rod wrapped with toilet paper, a filter according to any one of claims 1 to 5, and a splicing paper connecting the cigarette rod and the filter.

7. The fragrance-absorbing article according to claim 6, wherein, At least one of the roll paper or the tipping paper has a colored portion.

8. A scented inhalable article packaging article, which is a scented inhalable article packaging article containing the scented inhalable article of claim 6 or 7, wherein, The scented inhaler is directly packaged in inner paper, and at least the portion of the inner paper that contacts the filter tip of the scented inhaler has a liquid-repellent layer that is capable of filtering liquids containing phenol.

9. The scented inhalable packaging article according to claim 8, wherein, The liquid-repellent layer of the inner wrapping paper comprises one or more selected from starch, cellulose nanofibers, ethyl cellulose, nitrocellulose, gum arabic, aluminum, paraffin wax, polyethylene, polypropylene, polyvinyl alcohol, fluoropolymer, acrylic resin, and organosilicon.

10. The scented inhalable article packaging according to claim 8 or 9, wherein, The liquid-repellent layer of the inner wrapping paper comprises one or more selected from ethyl cellulose, acrylic resin, paraffin wax, polyethylene, polypropylene, fluoropolymer, and organosilicon.

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