Filter for smoking article, and smoking article comprising same

Abstract

Provided are a filter for a smoking article, and a smoking article comprising same. The filter for a smoking article includes: a filter tow including regenerated cellulose fibers; a flavoring dispersed in the filter tow; and a functional additive dispersed in the filter tow.

Description

Filter for smoking articles and smoking article including the same

[0001] The present invention relates to a filter for smoking articles and a smoking article comprising the same. Specifically, it relates to a filter for smoking articles to which an additive is added to increase the residual amount of flavoring within a biodegradable filter and the amount of flavoring transferred upon smoking, and a smoking article comprising the same.

[0002]

[0003] Cellulose acetate tow is a chemically modified material produced by reacting cellulose with sulfuric acid and acetic acid. Cellulose acetate (CA) tow, which is used in the manufacture of conventional cigarette filters, utilizes plasticizers to improve filter hardness; consequently, using cellulose acetate tow to manufacture filters enhances the bonding strength between the tow fibers along with increased hardness. However, there is a problem in that cellulose acetate filters manufactured using plasticizers struggle to meet analytical passing standards, such as those for industrial composting conditions.

[0004] Meanwhile, lyocell tow (also referred to as 'L-tow') is a material made by dissolving cellulose in an eco-friendly solvent called NMMO (NMethylmorpholine N-Oxide) and forming it into fiber bundles, rather than modifying the structure of cellulose through chemical reactions like cellulose acetate tow. Lyocell tow is an eco-friendly material whose main component is cellulose.

[0005] Furthermore, research is currently being conducted on technologies that add various flavors and tastes to smoking products. For example, TJNS (Transfer Jet Nozzle System) filters in which flavorings are sprayed onto the filter, filters equipped with capsules, and tip papers coated with sweeteners are being utilized.

[0006] Therefore, regarding filters constituting smoking products, there is a growing need to develop filters that possess excellent biodegradability, ensure residual stability of the flavoring within the filter during storage and distribution, effectively deliver the amount of flavoring through the user's mouth during smoking, and exhibit excellent transfer persistence.

[0007]

[0008] The problem that the present invention aims to solve is to provide a filter for a smoking product with enhanced biodegradability by constructing the filter using lyocell tow with excellent biodegradability, and a smoking product including said filter.

[0009] In addition, another problem that the present invention aims to solve is to provide a filter for a smoking product and a smoking product including said filter, wherein by dispersing and adding an additive (e.g., polyethylene glycol) together with a flavoring (e.g., menthol) in a lyocell tow, the amount of flavoring transferred through the user's mouth during smoking is excellent, as well as the amount of flavoring transferred, is excellent. Furthermore, the invention aims to provide a filter for a smoking product and a smoking product including said filter, wherein the amount of flavoring transferred can be maintained uniformly even with an increase in the number of puffs.

[0010] In addition, another problem that the present invention aims to solve is to provide a filter for smoking products and a smoking product including the filter, which can minimize problems such as the wrapper surrounding the lyocell tow getting wet due to the flavoring and additive, bursting due to the inability to stably fix the lyocell tow, or ink smudging, by adding an additive (e.g., polyethylene glycol) in an optimal amount along with a flavoring (e.g., menthol) to the lyocell tow.

[0011] However, the problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below.

[0012]

[0013] A filter for a smoking article according to one embodiment for solving the above problem comprises a filter tow comprising regenerated cellulose fibers, a flavoring dispersed within the filter tow, and a functional additive dispersed within the filter tow.

[0014] In some embodiments, the regenerated cellulose fiber may include at least one of lyocell fiber, viscose fiber, and modal fiber.

[0015] In some embodiments, the regenerated cellulose fiber may be composed of lyocell fiber, and the filter tow may be composed of lyocell tow.

[0016] In some embodiments, the regenerated cellulose fiber may be a lyocell fiber, and the filter tow may be a lyocell tow.

[0017] In some embodiments, the flavor may be characterized as a flavor liquid containing flavor components.

[0018] In some embodiments, the fragrance liquid may be characterized by containing menthol, and the total content of the fragrance liquid contained in the filter for the smoking article may be 1.0 mg or more and 30.0 mg or less.

[0019] In some embodiments, the functional additive may comprise one or more selected from the group consisting of polyethylene glycol (PEG), triethyl citrate (TEC), ethylene glycol oligomers, ethylene glycol oligomer ether derivatives which are ether derivatives of the ethylene glycol oligomers, propylene glycol oligomers, and propylene glycol oligomer ether derivatives which are ether derivatives of the propylene glycol oligomers.

[0020] In some embodiments, the ethylene glycol oligomer comprises at least one of diethylene glycol (DEG), triethylene glycol (TEG), tetraethylene glycol (TetraEG), and pentaethylene glycol (PentaEG), and the propylene glycol oligomer may comprise at least one of dipropylene glycol (DPG), tripropylene glycol (TPG), tetrapropylene glycol (TetraPG), and pentapropylene glycol (PentaPG).

[0021] In some embodiments, the functional additive may be characterized by comprising polyethylene glycol (PEG) and triethyl citrate (TEC), and the mixing ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) may be 1:9 to 9:1.

[0022] In some embodiments, the total content of the functional additive dispersed within the filter tow may be characterized as being 1.0 mg or more and 25.0 mg or less.

[0023] In some embodiments, the total content of the functional additive dispersed within the filter tow may be characterized as being 0.05 mg / mm or more and 0.85 mg / mm or less.

[0024] A smoking article according to one embodiment for solving the above other problems comprises a smoking material portion and a filter portion disposed downstream of the smoking material portion, wherein the filter portion comprises a lyocell tow composed of lyocell fibers, a fragrance liquid dispersed within the lyocell tow, a functional additive dispersed within the lyocell tow, and a wrapper wrapping the lyocell tow, wherein the wrapper is a hard paper roll with a basis weight of 40 gsm or more.

[0025]

[0026] According to a filter for a smoking article and a smoking article including the same, an additive (e.g., polyethylene glycol) is dispersed in a lyocell tow to which a flavoring (e.g., menthol) is applied, so that not only is the persistence (or retention) of the flavoring within the filter excellent, but the amount of flavoring transferred through the user's mouth during smoking can also be excellent. Furthermore, the amount of flavoring transferred can be maintained uniformly as the number of puffs increases.

[0027] In addition, according to one embodiment, a filter for a smoking article and a smoking article including the same, by adding an additive (e.g., polyethylene glycol) in an optimal amount together with a flavoring (e.g., menthol) to a Lyocell tow, problems such as the wrapper surrounding the Lyocell tow getting wet due to the flavoring and additive, or the Lyocell tow failing to securely fix itself, causing it to burst or the ink to smudge, can be minimized.

[0028] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

[0029]

[0030] FIG. 1 is a schematic perspective view of a smoking article according to one embodiment.

[0031] FIG. 2 is a graph showing the results of measuring the residual amount of flavoring in the filter portion of a smoking article according to the storage period of a smoking article including a filter according to Example 1 and Comparative Examples 1-2.

[0032] Figure 3 is a graph showing the results of measuring the amount of flavor transferred according to the storage period of a smoking article containing a filter according to Example 1 and Comparative Examples 1-2.

[0033] Figure 4 is a graph showing the results of measuring the amount of flavor transferred per puff of a smoking article containing a filter according to Example 2 and Comparative Examples 3-4.

[0034]

[0035] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the attached drawings. The advantages and features of the present disclosure and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the attached drawings. However, the technical concept of the present disclosure is not limited to the following embodiments but can be implemented in various different forms. The following embodiments are provided merely to complete the technical concept of the present disclosure and to fully inform those skilled in the art of the scope of the present disclosure, and the technical concept of the present disclosure is defined only by the scope of the claims.

[0036] It should be noted that when assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present disclosure, if it is determined that a detailed description of related known components or functions could obscure the essence of the present disclosure, such detailed description is omitted.

[0037] Unless otherwise defined, all terms used herein (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which this disclosure pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise. The terms used herein are for describing the embodiments and are not intended to limit this disclosure. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text.

[0038] Additionally, terms such as first, second, A, B, (a), (b), etc., may be used to describe the components of the present disclosure. These terms are intended only to distinguish the components from other components and do not limit the nature, order, or sequence of the components. Where it is stated that a component is "connected," "coupled," or "joined" to another component, it should be understood that the component may be directly connected or joined to the other component, but that another component may also be "connected," "coupled," or "joined" between each component.

[0039] The terms “comprises,” “comprising,” “contain,” “containing,” “include,” “including,” “have,” and / or “having” as used in this disclosure do not exclude the presence or addition of one or more other components, steps, actions, and / or elements other than those mentioned.

[0040] Furthermore, unless explicitly stated otherwise, “or” means “or” in an inclusive sense, not in an exclusive sense. For example, condition A or B is satisfied in any one of the following cases: when A is true (or exists) and B is false (or does not exist); when A is false (or does not exist) and B is true (or exists); or when both A and B are true (or exist).

[0041] The use of the terms “at least one” or “one or more” is understood to include not only one but also any quantity exceeding one. Furthermore, the use of the phrase “at least one of X, Y, and Z” is understood to include not only cases involving only X, only Y, or only Z, but also any combination of X, Y, and Z.

[0042] References to “one embodiment” or “an embodiment” as used herein mean that a specific element, feature, structure, or characteristic described in relation to such embodiment is included in at least one embodiment. Furthermore, the expression “in one embodiment” as used in various parts of the specification does not necessarily refer to the same embodiment.

[0043] First, we will clarify some terms used in this specification.

[0044] In this specification, the term "smoking article" may mean any product capable of smoking or any product capable of providing a smoking experience, regardless of whether it is based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. For example, a smoking article may include products capable of smoking, such as cigarettes, cigars, and cigarillos.

[0045] In this specification, "smoking material" may mean any type of material that can be used in a smoking article.

[0046] In this specification, "filter part" refers to a component comprising a filtration material. For example, the filter element may include a plurality of fiber strands.

[0047] In this specification, "upstream" or "upstream direction" means a direction away from the smoker's bulb, and "downstream" or "downstream direction" may mean a direction closer to the smoker's bulb.

[0048] In this specification, "longitudinal direction" may mean a direction corresponding to the longitudinal axis of the smoking article. The “longitudinal axis” of the smoking article may mean an imaginary line extending along the main longitudinal direction of the smoking article. This axis generally extends from one end of the smoking article (e.g., the end of the mouthpiece or filter) to the opposite end (e.g., the end of the combustion or heat source).

[0049] In this specification, “regenerated cellulose filter” refers to a filter comprising or composed of regenerated cellulose tow.

[0050] In this specification, "lyocell filter" refers to a filter comprising or composed of lyocell tow.

[0051] In this specification, “viscose filter” refers to a filter that includes viscose tow or is composed of viscose tow.

[0052] In this specification, “modal filter” refers to a filter that includes or is composed of a modal tow.

[0053] In this specification, “regenerated cellulose tow” comprises a plurality of regenerated cellulose-based fibers or is composed of a plurality of regenerated cellulose-based fibers. In some embodiments, regenerated cellulose tow may refer to a bundle formed by cross-linking adjacent regenerated cellulose-based fibers.

[0054] In this specification, “lyocell tow” comprises a plurality of lyocell fibers or is composed of a plurality of lyocell fibers. In some embodiments, a lyocell tow may refer to a bundle formed by the crossing of adjacent lyocell fibers.

[0055] In this specification, “viscose tow” comprises a plurality of viscose fibers or is composed of a plurality of viscose fibers. In some embodiments, viscose tow may refer to a bundle formed by crossing adjacent viscose fibers.

[0056] In this specification, “modal tow” comprises a plurality of modal fibers or is composed of a plurality of modal fibers. In some embodiments, a modal tow may refer to a bundle formed by the crossing of adjacent modal fibers.

[0057] In this specification, “regenerated cellulose fiber” may refer to a cellulose fiber formed by processing a naturally occurring cellulose-based material.

[0058] In this specification, “lyocell fiber,” “viscose fiber,” and “modal fiber” may be eco-friendly fibers made from cellulose extracted from wood pulp. Specifically, “lyocell fiber,” “viscose fiber,” and “modal fiber” may be fibers made from cellulose derived from or primarily derived from wood pulp.

[0059] In this specification, “irregular cross-section” is defined as a cross-section whose shape is not circular but includes a plurality of protrusions. For example, a cross-section in which a plurality of protrusions branch and / or extend from a center and / or the center of the cross-section may be called an irregular cross-section. Here, “protrusion” may refer to a distinct and extended segment or arm extending outward from a central core or bonding point of a cross-section of a regenerated cellulose-based fiber (preferably a lyocell fiber).

[0060] In some embodiments, the regenerated cellulose-based fiber (preferably, lyocell fiber) may have a Y-shaped cross section with three protrusions branching and / or extending from the center and / or the center of the cross section, a cross-shaped cross section with four protrusions, and / or a star-shaped cross section with five or more protrusions, and may have an O-shaped cross section, but is not limited thereto.

[0061] In some embodiments, the regenerated cellulose-based fiber (preferably, lyocell fiber) may include three or more protrusions branching and / or extending from the center and / or the center of the cross section.

[0062] In some embodiments, the regenerated cellulose fiber (preferably lyocell fiber) included in the regenerated cellulose tow (preferably lyocell tow) may have a Y-shaped cross-section in terms of application for use in filters for smoking articles.

[0063] In this specification, "composed of" an element may mean being made of said element.

[0064] In this specification, a wrapper (e.g., a roll) may surround at least a portion of the surface surrounding the longitudinal axis of each part (part) and / or structure of a smoking article.

[0065] In this specification, “basis weight” refers to the mass per unit area of ​​a roll and / or wrapper. The basis weight of a roll and / or wrapper may be determined by measuring the mass and area of ​​the roll and / or wrapper and dividing the mass of the roll and / or wrapper by the area. The unit of basis weight may be gsm (gram per square meter), i.e., g / m².

[0066] In this specification, “hard paper” may refer to paper having a basis weight greater than a certain value, and “general hard paper” may refer to paper that has not been treated with an oil-resistant coating on its surface.

[0067] In some embodiments, “oil-resistant paper” may refer to paper with an oil-resistant treatment on the surface of the paper, and “oil-resistant hard paper” may refer to hard paper with an oil-resistant treatment on the surface of the paper.

[0068] In some embodiments, “general paper” may refer to paper that has not been treated with oil resistance on its surface, and “general hard paper” may refer to hard paper that has not been treated with oil resistance on its surface.

[0069] In this specification, the “single fineness (or monodenier)” of regenerated cellulose tow (preferably lyocell tow) refers to the fineness of a single monofilament strand separated from the multifilament of the regenerated cellulose-based fiber (preferably lyocell fiber) constituting the regenerated cellulose tow (preferably lyocell tow).

[0070] In this specification, the “total fineness (or total denier)” of regenerated cellulose tow (preferably, lyocell tow) refers to the fineness of the multifilaments of the regenerated cellulose-based fibers (preferably, lyocell fibers) constituting the regenerated cellulose tow (preferably, lyocell tow).

[0071] In this specification, “suction resistance” refers to the static pressure difference between the two ends of a sample when an airflow crosses the sample. For example, suction resistance can be measured using the method specified in ISO standard 6565:2015. According to ISO standard 6565:2015, suction resistance may refer to the static pressure difference between the two ends of a sample when crossed by an airflow under normal conditions (22±2 °C, relative humidity 60±5%) where the volumetric flow rate at the discharge end is 17.5 mm per second.

[0072] In this specification, “puff” refers to the act of inhaling or drawing in air through a smoking item for generating and inhaling smoke or vapor. “Puff count” may refer to the cumulative number of inhalation or drawing actions while using the smoking item.

[0073] In this specification, the unit "mmWG" means "mmH2O" as a unit of pressure.

[0074] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the attached drawings.

[0075] FIG. 1 is a schematic perspective view of a smoking article according to one embodiment.

[0076] Throughout the specification, "smoking article" may refer to an article capable of generating an aerosol, such as a cigarette, a cigar, etc. A smoking article may include an aerosol-generating substance and / or an aerosol-forming substrate. Additionally, a smoking article may include a solid material based on tobacco raw materials, such as sheet tobacco, loose tobacco, or reconstituted tobacco. A smoking substance may include a volatile compound.

[0077] Referring to FIG. 1, a smoking article (100) includes a smoking material part (10) and a filter part (20) positioned downstream of the smoking material part (10). The smoking article (100) may further include a smoking material part wrapper (30a), a filter part wrapper (30b), and a tip paper (40). A filter for a smoking article according to the present invention may include a filter part (20) and a filter part wrapper (30b) surrounding the filter part (20). The smoking material part wrapper (30a) and / or the filter part wrapper (30b) may be located at the outermost edge of the smoking article (100) and may be a single wrapper, but may also be a combination of multiple wrappers.

[0078] Throughout the specification, "upstream" or "upstream direction" means a direction away from the user (consumer) who smokes the smoking item (100), and "downstream" or "downstream direction" means a direction toward the user (consumer) who smokes the smoking item (100). For example, in the smoking item (100) illustrated in FIG. 1, the smoking material part (10) is located upstream or upstream of the filter part (20) included in the filter for the smoking item.

[0079] Furthermore, in this specification, the smoking article (100) may correspond to a heated cigarette, etc., used with an aerosol generating device such as a combustion type cigarette or an electronic cigarette device.

[0080] In some embodiments, the smoking material part (10) may be filled with at least one of a tobacco material, a nicotine-containing material, and an aerosol-generating material. In some embodiments, the smoking material part (10) may be filled with only the tobacco material, the nicotine-containing material, and the aerosol-generating material, respectively, or may be filled with a mixture of two or more of the tobacco material, the nicotine-containing material, and the aerosol-generating material. In some embodiments, the smoking material part (10) may be composed of one of the tobacco material and the nicotine-containing material and an aerosol-generating material mixed in a predetermined ratio.

[0081] In some embodiments, the tobacco material may include a smoking material such as raw tobacco leaves, leaflets, or a mixture of tobacco leaves and leaflets. In some embodiments, the processed smoking material may have the form of tobacco cut leaves, tobacco particles, tobacco sheets, tobacco beads, tobacco granules, tobacco powder, and / or tobacco extracts. In particular, the tobacco material may include one or more of, for example, tobacco leaves, tobacco veins, puffed tobacco, cut cut leaves, leaflets, and reconstituted tobacco. In some embodiments, the processed smoking material may be filled into the smoking material portion (10) in various forms.

[0082] In some embodiments, the nicotine-containing material may adsorb or contain a nicotine liquid composition. In some embodiments, the nicotine-containing material may be formulated in the form of granules, tablets, and sheets. In some embodiments, the nicotine-containing material may be filled into the smoking material portion (10) in various forms.

[0083] In some embodiments, the aerosol generating material may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited thereto.

[0084] In some embodiments, the smoking material part (10) may contain other additives such as flavorings, wetting agents and / or acetate compounds. In some embodiments, the aerosol generating material and / or additives may be contained in the smoking material.

[0085] In some embodiments, the smoking material part (10) may be wrapped by a smoking material part wrapper (30a).

[0086] In some embodiments, the smoking material part (10) may have a long, extended rod shape, and its length, circumference, and diameter are not specifically limited but may be adjusted to sizes generally used in the relevant technical field, taking into account the amount of smoking material filled, the preference of the user (consumer), etc.

[0087] In some embodiments, the filter for the smoking item may be positioned downstream of the smoking material section (10). In some embodiments, the filter section (20) of the filter for the smoking item is positioned downstream of the smoking material section (10) and may serve as a filter through which the aerosol material generated from the smoking material section (10) passes immediately before being inhaled by the user (consumer or smoker). In some embodiments, the filter section (20) may be manufactured in various materials or shapes. Meanwhile, for convenience of explanation in this specification, the filter for the smoking item and the filter section may be referred to interchangeably.

[0088] In some embodiments, a filter for a smoking article may include a filter portion (20), a flavoring dispersed inside the filter portion (20), a functional additive dispersed inside the filter portion (20), and a filter portion wrapper (30b) surrounding the filter portion (20).

[0089] In some embodiments, the filter portion (20) may include a filter tow comprising a filter material. The filter material may include cellulose-based fibers or be composed of cellulose-based fibers.

[0090] In some embodiments, the cellulose-based fiber included in the filter section (20) may include or be composed of regenerated cellulose fibers, and the filter section (20) may be a regenerated cellulose tow. In some embodiments, the regenerated cellulose fiber may include or be composed of at least one of lyocell fibers, viscose fibers, and modal fibers. Preferably, the filter section (20) may include or be composed of a lyocell tow that includes or is composed of lyocell fibers. That is, a regenerated cellulose tow that includes or is composed of a plurality of regenerated cellulose fibers may be a lyocell tow that includes or is composed of a plurality of lyocell fibers.

[0091] In some embodiments, the lyocell tow may comprise only a plurality of lyocell fibers and may not comprise any fibers other than said lyocell fibers. That is, in some embodiments, the lyocell tow may be composed of a plurality of lyocell fibers. Since the lyocell tow is composed solely of lyocell fibers, the biodegradability of a filter for a smoking article comprising a filter portion containing the lyocell tow may be excellent.

[0092] In the following description, regenerated cellulose fibers are lyocell fibers and regenerated cellulose tow is lyocell tow. However, this is not limited thereto, and regenerated cellulose fibers are not limited to any chemically unmodified cellulose-based fibers.

[0093] In some embodiments, the lyocell fiber may have an irregular cross-section. An irregular cross-section is defined as a cross-sectional shape that is not circular but includes multiple protrusions. For example, a cross-section with multiple protrusions extending from a center may be referred to as an irregular cross-section.

[0094] In some embodiments, the lyocell fiber may have a Y-shaped cross section with three protrusions branching from the center, a cross-shaped cross section with four protrusions, a star-shaped cross section with five or more protrusions, or an O-shaped cross section, but is not limited thereto.

[0095] In some embodiments, the filter portion (20) comprising regenerated cellulose tow (preferably lyocell tow) can replace all or part of the existing filter for smoking articles, and if it replaces part, the filter material previously used can be used together. In some embodiments, the existing filter material may be a cellulose acetate filter, a hollow tube filter, etc. In some embodiments, the filter portion (20) may be composed of regenerated cellulose tow, preferably lyocell tow.

[0096] In FIG. 1, the filter section (20) is shown as a mono filter consisting of a single filter, but is not limited thereto. In some embodiments, the filter section (20) may be provided as a dual filter or a triple filter having two or more filters to increase filter efficiency.

[0097] In some embodiments, the filter for the smoking article may include a flavoring dispersed within. Specifically, the filter for the smoking article may include a flavoring dispersed within the filter portion (20). In some embodiments, the flavoring may be dispersed within the filter tow, preferably the lyocell tow. In some embodiments, the flavoring may be a liquid as a flavoring liquid material containing a flavor component.

[0098] Since the filter for the smoking item contains a flavoring agent, the flavoring agent inside the filter can be transferred to the downstream side as air flows from the upstream side (side of the smoking material) to the downstream side (side of the filter for the smoking item) by the user's puff during smoking. Additionally, the flavoring agent within the filter for the smoking item can be expressed to the downstream side and introduced into the user's mouth not only by the flow caused by the user's puff but also by the heat generated during the combustion or heating of the smoking item.

[0099] In some embodiments, the flavoring may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit flavoring ingredients, cinnamon, sage, herbs, chamomile, kudzu, sweet potato, lavender, bergamot, lemon, orange, cinnamon, jasmine, ginger, vanilla, acacia, coffee, celery, sandalwood, cocoa, musk, ambergris, civet, castrium, geraniol, linalool, anethole, eugenol, benzaldehyde, anisaldehyde, isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate, etc. In some embodiments, the flavoring may include menthol, and liquid menthol may be dispersed on a lyocell tow. The flavoring may be a formulation of ingredients capable of providing various flavors or tastes to the user (or smoker). In some embodiments, the fragrance may be a fragrance liquid (fragrance liquid) containing or composed of a fragrance component, and the fragrance component may contain or be composed of menthol.

[0100] By including the flavoring within the filter portion (20) within the numerical range described below, the phenomenon of the wrapper of the filter for smoking items getting wet, the wrapper bursting, or the ink printed within the wrapper spreading due to the liquid flavoring can be minimized. In some embodiments, the filter for smoking items may include a functional additive dispersed therein. Specifically, the filter for smoking items may include a functional additive dispersed in the filter tow of the filter portion (20). In some embodiments, the functional additive is dispersed within the filter portion (20) together with the flavoring to perform the function of improving the residual amount and transfer amount of the flavoring within the filter for smoking items.

[0101] In some embodiments, the functional additive may comprise at least one of polyethylene glycol (PEG), triethyl citrate (TEC), an oligomer which is a short-chain compound formed by the bonding of a small number of polyhydric alcohols that are monomer units of the same structure, and an ether derivative of said oligomer. The oligomer may be a low molecular weight polymer in which two or more polyhydric alcohols of the same structure are repeatedly bonded, and the ether derivative of said oligomer may be a polymer in which at least one hydroxyl group (-OH) of said polymer is substituted in an ether form. In this specification, "oligomer" means a short-chain structure formed by the bonding of a small number of monomers, and in particular means a structure composed of 2 to 10 monomers.

[0102] In some embodiments, the polyhydric alcohol constituting the oligomer as an example material of a functional additive may include one of ethylene glycol (EG) and propylene glycol (PG).

[0103] In some embodiments, the functional additive may include one or more selected from the group consisting of polyethylene glycol (PEG), triethyl citrate (TEC), ethylene glycol oligomers, ethylene glycol oligomer ether derivatives which are ether derivatives of the ethylene glycol oligomers, propylene glycol oligomers, and propylene glycol oligomer ether derivatives which are ether derivatives of the propylene glycol oligomers.

[0104] In some embodiments, the ethylene glycol oligomer comprises at least one of diethylene glycol (DEG), triethylene glycol (TEG), tetraethylene glycol (TetraEG), and pentaethylene glycol (PentaEG), and the propylene glycol oligomer may comprise at least one of dipropylene glycol (DPG), tripropylene glycol (TPG), tetrapropylene glycol (TetraPG), and pentapropylene glycol (PentaPG).

[0105] Preferably, in some embodiments, the functional additive may include or be composed of at least one of polyethylene glycol (PEG) and triethyl citrate (TEC). The functional additive may include at least polyethylene glycol (PEG) or be composed of polyethylene glycol (PEG). More preferably, the functional additive may include or be composed of polyethylene glycol (PEG) and triethyl citrate (TEC).

[0106] In some embodiments, the filter for the smoking article may include a filter wrapper (30b) that surrounds the filter portion (20) and packages the filter portion (20). In some embodiments, the filter wrapper (30b) may include a roll. In some embodiments, the filter wrapper (30b) may include a standard roll, a standard hard roll, an oil-resistant standard roll, or an oil-resistant hard roll.

[0107] In some embodiments, the filter wrapper (30b) may include a hard roll. In this specification, a hard roll may refer to a roll having a basis weight greater than or equal to a predetermined numerical range. In particular, a hard roll may refer to a roll having a basis weight of 40 gsm or more, preferably 50 gsm or more, more preferably 60 gsm or more, even more preferably 70 gsm or more, and even more preferably 75 gsm or more. A standard roll may refer to a roll having a basis weight of less than 40 gsm, preferably 38 gsm or less, and more preferably 36 gsm or less. In some embodiments, the filter for a smoking article has excellent appearance retention and can impart appropriate hardness compared to when the filter wrapper (30b) includes a standard roll, because the filter wrapper (30b) includes a hard roll.

[0108] In some embodiments, the hard paper included in the filter wrapper (30b) may have a basis weight of 40 gsm or more, preferably 50 gsm or more, more preferably 60 gsm or more, more preferably 70 gsm or more, and more preferably 75 gsm or more.

[0109] In some embodiments, the filter wrapper (30b) may include a standard hard roll or an oil-resistant hard roll. Preferably, the filter wrapper (30b) may include an oil-resistant hard roll. By including an oil-resistant hard roll in the filter wrapper (30b), the filter for the smoking article may provide a filter for the smoking article with improved quality that prevents the problem of the wrapper bursting or the ink printed on the filter wrapper (30b) or tip paper (40) smudging, and a smoking article including the same.

[0110] In some embodiments, the smoking material part (10) wrapped by the smoking material part wrapper (30a) and the filter part (20) wrapped by the filter part wrapper (30b) may be combined and wrapped by tip paper (40). The tip paper (40) may be wrapped around at least a portion of the smoking material part wrapper (30a) (e.g., a downstream portion) and the outer edge of the filter part wrapper (30b) as shown in FIG. 1. In other words, in some embodiments, at least a portion of the smoking material part (10) and the filter part (20) may be further wrapped by tip paper (40) and physically combined.

[0111] According to some embodiments of the present invention, the tip paper (40) may be made of non-porous rolled paper that is not oil-resistant, but is not limited thereto. In addition, in some embodiments, the tip paper (40) may include a non-combustible material to prevent the filter portion (20) from burning, but is not limited thereto.

[0112] Hereinafter, the filter portion (20) of a filter for a smoking article according to one embodiment of the present invention will be described in detail.

[0113] The present invention relates to a filter for a smoking article (100) included therein. A filter for a smoking article according to one embodiment of the present invention may include a lyocell tow comprising a plurality of lyocell fibers, a fragrance dispersed in the lyocell tow, and a functional additive dispersed in the lyocell tow together with the fragrance.

[0114] In some embodiments, the lyocell fiber may be an eco-friendly fiber made of cellulose extracted from wood pulp. The lyocell tow may refer to a bundle formed by cross-linking adjacent lyocell fibers.

[0115] In some embodiments, the lyocell fiber may have a heterogeneous cross-section. In some embodiments, the lyocell fiber may have a Y-shaped cross-section with three protrusions branching from the center, a cross-shaped cross-section with four protrusions, a star-shaped cross-section with five or more protrusions, or an O-shaped cross-section, but is not limited thereto. The terms mentioned herein have the same meanings as described above.

[0116] In some embodiments, the flavoring dispersed on the lyocell tow may include flavor components. The flavoring may perform the function of expressing and delivering a scent. In some embodiments, the flavoring may be a flavoring liquid substance, and the filter for the smoking article may be a TJNS (transfer jet nozzle system) filter in which the flavoring liquid substance is flavored on the lyocell tow.

[0117] In some embodiments, the flavoring substance may be a formulation that imparts flavor to an aerosol or mainstream smoke generated from a tobacco substance or smoking substance, and may include, for example, menthol, peppermint, spearmint oil, various fruit flavoring ingredients, cinnamon, sage, herbs, chamomile, kudzu, sweet potato, lavender, bergamot, lemon, orange, cinnamon, jasmine, ginger, vanilla, acacia, coffee, celery, sandalwood, cocoa, musk, ambergris, civet, castrium, geraniol, linalool, anethole, eugenol, benzaldehyde, anisaldehyde, isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate, etc., but is not limited thereto. In some embodiments, the flavoring substance may include menthol or be composed of menthol.

[0118] In some embodiments, the total content of the fragrance substance dispersed in the lyocell tow and contained in the lyocell filter is 1.0 mg or more and 30.0 mg or less, 1.0 mg or more and 29.0 mg or less, 1.0 mg or more and 28.0 mg or less, 1.0 mg or more and 27.0 mg or less, 1.0 mg or more and 26.0 mg or less, 1.0 mg or more and 25.0 mg or less, 1.0 mg or more and 24.0 mg or less, 1.0 mg or more and 23.0 mg or less, 1.0 mg or more and 22.0 mg or less, 1.0 mg or more and 21.0 mg or less, 1.0 mg or more and 20.0 mg or less, 1.5 mg or more and 19.0 mg or less, 2.0 mg or more and 18.0 mg or less, 2.5 mg or more and 15.0 mg or less, 3.0 mg or more and 14.5 mg or less, 4.0 mg or more The amount may be 14.0 mg or less, 5.0 mg or more and 13.5 mg or less, 5.5 mg or more and 13.0 mg or less, or preferably 7.5 mg or more and 13.0 mg, more preferably 8.5 mg or more and 13.0 mg or less. In this case, in some embodiments, the content of the fragrance liquid substance may have a range of 0.05 mg / mm or more and 0.75 mg / mm or less, preferably 0.32 mg / mm or more and 0.50 mg or less, based on the length of the filter portion (20). If the amount is less than the lower limit of the above range, a decrease in the amount of fragrance expression, transfer, and residue may occur, and if the amount exceeds the upper limit of the above range, problems such as the formation of the filter for the smoking item, ink smudging, wrapper bursting, wrapper wetting, or leakage of the fragrance liquid substance during storage may occur.

[0119] In some embodiments, the functional additive may be dispersed on the lyocell tow together with the flavor (or flavoring substance). As described above, the functional additive is dispersed on the lyocell tow together with the flavor (or flavoring substance), so that the residual amount of flavor within the lyocell filter and the amount of flavor transferred upon smoking can be improved compared to a lyocell filter in which the functional additive is not dispersed, even after a long storage period.

[0120] In some embodiments, the functional additive may be sprayed after the fragrance is sprayed onto the lyocell tow, may be sprayed simultaneously with the fragrance onto the lyocell tow, or may be sprayed after the functional additive is sprayed.

[0121] In some embodiments, the functional additive may include or be composed of at least one of polyethylene glycol (PEG) and triethyl citrate (TEC). The functional additive may include at least polyethylene glycol (PEG) or be composed of polyethylene glycol (PEG). Preferably, the functional additive may include or be composed of polyethylene glycol (PEG) and triethyl citrate (TEC).

[0122] Meanwhile, polyethylene glycol (PEG) may not cause plasticization of lyocell tow containing lyocell fibers. Accordingly, the biodegradability of the lyocell filter containing lyocell tow can be excellent despite the addition of functional additives. In addition, even though polyethylene glycol (PEG) does not plasticize the lyocell tow, when added to the lyocell filter along with a fragrance liquid (e.g., menthol), the transfer amount, retention, and persistence of the fragrance liquid can be improved.

[0123] In some embodiments, the functional additive may include or be composed of triethyl citrate (TEC) and polyethylene glycol (PEG), and the mixing ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) may be 1:9 to 9:1, 1:9 to 8:2, 1:9 to 7:3, 1:9 to 6:4, 1:9 to 5:5, 1:9 to 4:6, 1:9 to 3:7, or 1:9 to 2:8, preferably 1:9, but is not limited thereto.

[0124] In some embodiments, the total content of the functional additive dispersed in the lyocell tow may be 1.0 mg or more and 25.0 mg or less, 2.0 mg or more and 23.0 mg or less, 2.5 mg or more and 20.0 mg or less, 2.8 mg or more and 18.0 mg or less, 3.0 mg or more and 15.0 mg or less, 3.3 mg or more and 14.0 mg or less, 3.5 mg or more and 13.5 mg or less, 4.0 mg or more and 13.0 mg or less, or preferably 4.5 mg or more and 12.5 mg or less. In some embodiments, the content of the functional additive may have a range of 0.05 mg / mm or more and 0.85 mg / mm or less, preferably 0.15 mg / mm or more and 0.46 mg / mm or less, based on the length of the filter portion (20). If the amount is below the lower limit of the above range, the improvement in fragrance expression, transfer amount, and residual amount may not be significant, and if the amount exceeds the upper limit of the above range, problems such as the formation of the filter for smoking articles, ink smudging, wrapper bursting, wrapper wetting, or leakage of the fragrance liquid substance during storage may occur.

[0125] FIG. 2 is a graph showing the results of measuring the residual amount of flavoring according to the storage period of a smoking article including a filter according to Example 1 and Comparative Examples 1-2, FIG. 3 is a graph showing the results of measuring the amount of flavoring transferred according to the storage period of a smoking article including a filter according to Example 1 and Comparative Examples 1-2, and FIG. 4 is a graph showing the results of measuring the amount of flavoring transferred per puff of a smoking article including a filter according to Example 2 and Comparative Examples 3-4.

[0126] Hereinafter, the structure of the present invention and the resulting effects are to be explained in more detail through examples and comparative examples. However, these examples are intended to explain the present invention more specifically, and the scope of the present invention is not limited to these examples.

[0127]

[0128] Example 1

[0129] A lyocell filter rod, i.e., a filter rod for smoking products, was manufactured by adding 24.8 mg / rod of menthol (flavoring, flavoring substance) and 60 mg / rod of PEG (functional additive) to a lyocell tow made of multiple lyocell fibers using the TJNS method and wrapping it with a roll paper, and having a length of 108 mm and physical properties as shown in Table 1.

[0130]

[0131] Comparative Example 1

[0132] A filter rod for smoking articles was manufactured having properties similar to Example 1 and shown in Table 1, except that PEG was not added as a functional additive within the lyocell filter.

[0133]

[0134] Comparative Example 2

[0135] A filter rod for a smoking article was manufactured having physical properties similar to Comparative Example 1 and shown in Table 1, except that the fiber constituting the filter rod was cellulose acetate tow and triacetin (TA) was applied to the cellulose acetate tow at a weight of 7%.

[0136]

[0137] Filters for smoking articles were manufactured according to Example 1 and Comparative Examples 1-2 having the physical properties of Table 1 below.

[0138]

[0139] Classification Weight (mg) Suction Resistance (mmWG) Circumference (mm) Hardness (Filtrona) Example 1 (L filter + Menthol + PEG) 896 455 24.293 Comparative Example 1 (L filter + Menthol) 855 47 224.291 Comparative Example 2 (CA filter + Menthol) 836 456 24.294

[0140]

[0141] Experimental Example 1: Analysis of Menthol Migration and Residue by Storage Period (1)

[0142] In Example 1 and Comparative Examples 1-2, a filter rod for a smoking product with a length of 108 mm was stored for periods (0 months, 1 month, 6 months) under conditions of an internal temperature of 22°C and a relative humidity of 60%. Afterward, the filter rods for smoking products stored for each period were divided into four parts, and a smoking product filter (20) with a length of 27 mm and a smoking material part filled with a candle were connected and wrapped with cigarette paper to manufacture a smoking product. The amount of menthol transferred from the manufactured smoking product was measured and is shown in Table 2 below. Meanwhile, the amount of menthol transferred was analyzed using an Agilent GC (8890) after collecting the menthol collected on the pad using a Cambridge filter pad (CFP) 44 mm to collect smoke components after smoking with a smoking device (cigarette smoking machine Borgwaldt RM20H), extracting with a solvent (isopropyl alcohol).

[0143] In addition, the filter rods for smoking products with a length of 108 mm of Example 1 and Comparative Examples 1-2 were stored for 6 months under conditions of an internal temperature of 22°C and a relative humidity of 60%. After 6 months of storage, the filter rods for smoking products were divided into four parts, and the residual amount of menthol contained in the filter (20) with a length of 27 mm was measured and is shown in Table 3. Meanwhile, the residual amount of menthol was analyzed using an Agilent GC (8890) FID after extracting (overnight) the amount of menthol remaining in the filter with an organic solvent (methanol) after smoking with a smoking device (cigarette smoking machine Borgwaldt RM20H).

[0144]

[0145] Classification Storage Period Menthol Transfer Amount (mg / cia) Example 10 months 1.0 1 month 1.0 6 months 1.0 Comparative Example 10 months 1.0 1 month 1.1 6 months 0.8 Comparative Example 20 months 1.6 1 month 1.6 6 months 1.3

[0146]

[0147] Classification Storage Period Residual Menthol Amount in Filter (mg / rod) Example 16 Months 3.6 Comparative Example 16 Months 3.7 Comparative Example 26 Months 3.0

[0148]

[0149] Referring to Table 3, it can be seen that the amount of residual menthol remaining in the filter is higher in Example 1 and Comparative Example 1, which are lyocell filters containing lyocell tow, compared to Comparative Example 2, which is a CA filter containing CA tow. In other words, it can be seen that the lyocell filter composed of lyocell tow has higher fragrance retention than the CA filter composed of CA tow. This is expected to be due to the increased retention of menthol in the filter caused by the hydrophilic properties of lyocell tow.

[0150] Next, referring to Table 2, it can be confirmed that Example 1, in which PEG (functional additive) was added to the lyocell tow, exhibits a uniform and superior amount of menthol transfer during long-term storage compared to Comparative Example 1, in which PEG was not added. Meanwhile, referring to Comparative Example 1, it can be confirmed that in the case of the lyocell filter with added fragrance liquid (menthol), a decrease in the amount of fragrance liquid transfer occurs during long-term storage.

[0151] Accordingly, it can be confirmed that the reduction in the amount of menthol transferred can be prevented by adding PEG (functional additive) to a lyocell filter, in which the amount of menthol transferred is reduced compared to a CA filter due to its hydrophilic properties.

[0152]

[0153] Experimental Example 2: Analysis of Menthol Migration and Residue by Storage Period (2)

[0154] In a manner similar to Experimental Example 1, filter rods for smoking products of Example 1 and Comparative Examples 1-2, with a length of 108 mm, were stored for periods (after 1 day, after 4 days, after 11 days, after 26 days, after 41 days) under conditions where the internal temperature was 22°C and the relative humidity was 60%. The residual rate (%) of menthol for each period was calculated and shown in the graph of Fig. 2, and the migration rate (%) of menthol for each period was calculated and shown in the graph of Fig. 3.

[0155]

[0156] In Figure 2, the X-axis represents the storage period, and the Y-axis represents the residual rate (%) of menthol in the filter for smoking products after smoking. For example, based on a filter rod for smoking products with a length of 108 mm, the total content of menthol added to a filter for smoking products with a length of 27 mm may be 6.2 mg, and the residual rate (%) of menthol by period may represent the ratio of the content of menthol remaining in the filter by period to the total content of menthol added to the filter for smoking products, expressed as a percentage (%). In other words, it represents the value obtained by dividing the content of menthol remaining in the filter by period by the total content of menthol added to the filter, expressed as a percentage.

[0157] In addition, in FIG. 3, the X-axis represents the storage period, and the Y-axis represents the menthol migration rate (%) in the mainstream smoke after smoking. The menthol migration rate may refer to the ratio of the total menthol content contained in the filter for the smoking product to the amount of menthol migrated per puff, expressed as a percentage (%). That is, for filters by period, the value obtained by dividing the menthol content contained in the mainstream smoke after passing through the filter by the total menthol content added to the filter is expressed as a percentage.

[0158] Referring to FIGS. 2 and 3, it can be seen that as the storage period increases beyond 41 days, the menthol migration rate is similar between Example 1 and Comparative Example 2, and significantly higher in Example 1 compared to Comparative Example 1. Accordingly, it can be confirmed that, despite the application of a lyocell filter, the menthol migration rate can be provided similarly to that of cellulose acetate by adding a functional additive.

[0159]

[0160] Example 2

[0161] A smoking product was manufactured by adding 5.5 mg / rod of menthol (flavoring, flavoring liquid substance) and 14 mg / rod of PEG (functional additive) to a lyocell tow made of multiple lyocell fibers using the TJNS method, wrapping it with oil-resistant hard paper with a basis weight of 75 gsm, connecting a filter for smoking products with a length of 27 mm to a smoking material part filled with cigars, and wrapping it with cigarette paper.

[0162]

[0163] Comparative Example 3

[0164] A smoking article was manufactured in the same manner as in Example 2, except that PEG was not added as a functional additive within the lyocell filter.

[0165]

[0166] Comparative Example 4

[0167] A smoking article was manufactured in the same manner as Comparative Example 3, except that the fiber constituting the filter rod was cellulose acetate tow and 7% by weight of triacetin (TA) was applied to the cellulose acetate tow.

[0168]

[0169] Experimental Example 3: Analysis of Menthol Migration Patterns by Puff

[0170] The smoking article according to Example 2 and Comparative Examples 3-4 was smoked using a smoking device, and the menthol content contained in the smoke components was measured. The amount of menthol transferred into the main smoke per puff was analyzed, and the amount of menthol transferred per puff and the total amount of menthol transferred are shown in Table 4 and the graph in Figure 4.

[0171]

[0172] Puff Sumentol Transfer Amount (mg / puff) Comparative Example 4 Comparative Example 3 Example 2 10.2 20.2 30.2 320.2 40.2 30.2 330.2 20.19 0.20 40.18 0.16 0.15 50.15 0.13 0.12 60.11 0.10 0.10 70.08 0.08 0.078 0.06 0.07 0.079 0.05 0.06 0.061 00.04 0.05 0.061 10.04 0.05 0.051 20.03 0.05 0.051 30.03 0.05 0.041 40.03 0.04 0.04 Deviation 0.08 0.07 0.07 Total Transfer amount (mg) 1.48 1.49 1.47

[0173]

[0174] Referring to Table 4 and Figure 4, it can be seen that in the initial puffs (1 puff to 5 puffs), Comparative Example 4 has a higher amount of menthol transfer per puff compared to Comparative Example 3 and Example 2, but after 8 puffs, that is, as the later stages progress, the transfer rate per puff of Comparative Example 4 decreases compared to Example 2 and Comparative Example 3. In other words, it can be seen that the uniformity of menthol transfer per puff from the start of smoking until the end of smoking is superior in Example 2 and Comparative Example 3 compared to Comparative Example 4. Accordingly, it can be confirmed that the lyocell filter improves the uniformity of menthol transfer compared to the CA filter.

[0175]

[0176] Comparative Example 5 (Classification 10)

[0177] A filter rod for smoking products (lyocell filter rod) was manufactured by wrapping a lyocell tow containing multiple lyocell fibers and weighing 700 mg in a standard hard paper with a basis weight of 75 gsm, having an inhalation resistance of 450 mmWG, a length of 108 mm, and a circumference of 24.2 mm.

[0178]

[0179] Comparative Example 6 (Classification 11)

[0180] A filter rod for a smoking article was manufactured in the same manner as Comparative Example 5, except that a fragrance liquid (flavoring) containing 50% menthol was sprayed onto a lyocell tow and added at a rate of 50 mg / rod.

[0181]

[0182] Example 3 (Classification 12)

[0183] A filter rod for smoking products was manufactured in the same manner as Comparative Example 6, except that a functional additive composed of TEC and PEG in a 1:9 ratio was additionally added at a rate of 20 mg / rod to the filter rod for smoking products.

[0184]

[0185] Example 4 (Classification 13)

[0186] A filter rod for smoking products was manufactured in the same manner as Comparative Example 6, except that a functional additive composed of TEC and PEG in a 1:9 ratio was additionally added at a rate of 40 mg / rod to the filter rod for smoking products.

[0187]

[0188] Example 5 (Classification 14)

[0189] A filter rod for smoking products was manufactured in the same manner as Comparative Example 6, except that a functional additive composed of TEC and PEG in a 1:9 ratio was additionally added at a rate of 60 mg / rod to the filter rod for smoking products.

[0190]

[0191] Comparative Example 7 (Classification 4)

[0192] A filter rod for smoking products was manufactured in the same manner as Comparative Example 5, except that the lyocell tow was wrapped in oil-resistant hard paper with a basis weight of 75 gsm.

[0193]

[0194] Comparative Example 8 (Classification 5)

[0195] A filter rod for a smoking product was manufactured in the same manner as Comparative Example 7, except that a fragrance liquid (flavoring) containing 50% menthol was sprayed onto a lyocell tow and added at a rate of 30 mg / rod.

[0196]

[0197] Comparative Example 9 (Classification 6)

[0198] A filter rod for a smoking product was manufactured in the same manner as Comparative Example 7, except that a fragrance liquid (flavoring) containing 50% menthol was sprayed onto a lyocell tow and added at a rate of 50 mg / rod.

[0199]

[0200] Example 6 (Classification 7)

[0201] A filter rod for smoking products was manufactured in the same manner as Comparative Example 9, except that a functional additive composed of TEC and PEG in a 1:9 ratio was additionally added at a rate of 20 mg / rod to the filter rod for smoking products.

[0202]

[0203] Example 7 (Classification 8)

[0204] A filter rod for smoking products was manufactured in the same manner as Comparative Example 9, except that a functional additive composed of TEC and PEG in a 1:9 ratio was additionally added at a rate of 40 mg / rod to the filter rod for smoking products.

[0205]

[0206] Example 8 (Classification 9)

[0207] A filter rod for smoking products was manufactured in the same manner as Comparative Example 9, except that a functional additive composed of TEC and PEG in a 1:9 ratio was additionally added at a rate of 60 mg / rod to the filter rod for smoking products.

[0208]

[0209] Experimental Example 5: Evaluation of appearance quality according to the amount of fragrance liquid and functional additives added to the filter, and the type of wrapper

[0210]

[0211] Filters for smoking products according to Examples 3 to 8 and Comparative Examples 5 to 9 were stored for 8 weeks under room temperature conditions (internal temperature 22°C, relative humidity 60%) to evaluate the physical properties and appearance quality of the filters for smoking products, and the results are shown in Table 5 below.

[0212]

[0213] Classification Time Change (Physical Properties) Raffle Bursting Box Wetting Ink Smudging Comparison Example 5 Good None Good Good Comparison Example 6 Good None Good Occurrence Example 3 Good None Good Occurrence Example 4 Good None Slight Increase Occurrence Example 5 Good None Slight Increase Occurrence Comparison Example 7 Good None Good Good Comparison Example 8 Good None Good Good Comparison Example 9 Good None Good Occurrence Example 6 Good None Good Good Example 7 Good None Good Good Example 8 Good None Slight Increase Good

[0214] Referring to Comparative Examples 5-6 and Examples 3-5 manufactured using ordinary hard roll paper in Table 5, it can be seen that Comparative Example 5, which did not have fragrance added, did not experience ink bleeding, whereas Comparative Example 6 and Examples 3-5, which had fragrance added, did experience ink bleeding. In other words, when manufacturing a filter rod for smoking products using ordinary hard roll paper, if fragrance is added, it can be seen that the fragrance added inside the filter leaks out, causing the ink printed on the tip paper to bleed.

[0215] Meanwhile, referring to Comparative Example 9 and Examples 6-7, which were manufactured with oil-resistant hard paper and had the same amount of fragrance liquid added, it can be seen that ink bleeding occurred in Comparative Example 9, which did not have the functional additive (PEG+TEC) added, whereas no ink bleeding occurred in Examples 6-7. In other words, it can be expected that this is because, despite having the same amount of fragrance liquid added, the functional additive causes the fragrance liquid to remain stably within the lyocell tow, reducing the amount leaked to the outside and thus preventing ink bleeding.

[0216] In addition, referring to Examples 6-8, which were manufactured with oil-resistant hard paper with the same amount of fragrance liquid added, it can be seen that in Examples 6-7, physical properties were good and no tearing, box wetting, or ink bleeding occurred, whereas in Example 8, box wetting occurred. This confirms that when a functional additive (PEG+TEC) is applied, ink bleeding does not occur, but as the amount of the functional additive increases, the amount of leaking liquid increases, causing box wetting to occur.

[0217] In addition, referring to Examples 3-4, where the amount of fragrance liquid and functional additives are the same, but the wrapper surrounding the filter is a standard hard paper roll, and Examples 6-7, where the wrapper is an oil-resistant hard paper roll, it can be seen that in Examples 3-4, box wetting and / or ink bleeding occurs, whereas in Examples 6-7, box wetting and / or ink bleeding does not occur. That is, it can be confirmed that when oil-resistant hard paper with oil-resistant treatment is applied, the occurrence of problems such as box wetting and ink bleeding is minimized with the same content of functional additives and fragrance liquid.

[0218] Accordingly, when manufacturing a filter rod for smoking products having a length of 108 mm and a circumference of 24.2 mm by adding a lyocell tow containing multiple lyocell fibers and weighing about 700 mg, a fragrance liquid containing menthol at 50 mg / rod, and a functional additive composed of TEC and PEG in a 1:9 ratio at 20 mg / rod to 40 mg / rod, and wrapping it with an oil-resistant hard wrapper, the transfer and retention amounts of menthol are excellent, and at the same time, problems such as the filter wrapper or tip paper bursting or ink bleeding occurring due to the fragrance liquid and functional additive can be minimized.

[0219]

[0220] Although embodiments of the present disclosure have been described above with reference to the attached drawings, those skilled in the art will understand that the present disclosure may be practiced in other specific forms without altering the technical concept or essential features thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present disclosure shall be interpreted by the claims below, and all technical concepts within the equivalent scope shall be interpreted as being included within the scope of rights of the technical concepts defined by the present disclosure.

Claims

1. Filter tow containing regenerated cellulose fibers; Fragrance dispersed within the filter tow above; and including functional additives dispersed within the filter tow above, Filter for smoking products.

2. In Paragraph 1, The above-mentioned regenerated cellulose fiber comprises at least one of lyocell fiber, viscose fiber, and modal fiber, Filter for smoking products.

3. In Paragraph 2, The above-mentioned regenerated cellulose fiber is composed of lyocell fiber, and The above filter tow is characterized by being composed of lyocell tow. Filter for smoking products.

4. In Paragraph 1, The above-mentioned fragrance is characterized as being a fragrance liquid containing flavor components, Filter for smoking products.

5. In Paragraph 4, The above fragrance liquid contains menthol, and Characterized by the total content of the flavor liquid contained in the filter for the smoking product being 1.0 mg or more and 30.0 mg or less. Filter for smoking products.

6. In Paragraph 1, The above functional additive comprises one or more selected from the group consisting of polyethylene glycol (PEG), triethyl citrate (TEC), ethylene glycol oligomers, ethylene glycol oligomer ether derivatives which are ether derivatives of the ethylene glycol oligomers, propylene glycol oligomers, and propylene glycol oligomer ether derivatives which are ether derivatives of the propylene glycol oligomers. Filter for smoking products.

7. In Paragraph 6, The above functional additive comprises polyethylene glycol (PEG) and triethyl citrate (TEC), and Characterized by the fact that the mixing ratio of the above triethyl citrate (TEC) and polyethylene glycol (PEG) is 1:9 to 9:1, Filter for smoking products.

8. In Paragraph 1, Characterized by the total content of the functional additive dispersed within the filter tow being 1.0 mg or more and 25.0 mg or less. Filter for smoking products.

9. In Paragraph 1, Characterized by the total content of the functional additive dispersed within the filter tow being 0.05 mg / mm or more and 0.85 mg / mm or less. Filter for smoking products.

10. Smoking substance part; and It includes a filter section positioned downstream of the above-mentioned smoking material section, The above filter unit is, Lyocell tow composed of lyocell fibers, Fragrance liquid dispersed within the above lyocell tow, Functional additives dispersed within the above lyocell tow, and It includes a wrapper that encloses the above-mentioned lyocell tow, The above wrapper is characterized by being a hard paper roll with a basis weight of 40 gsm or more, Smoking items.

Images