Filter for smoking article, and smoking article comprising same

Abstract

Disclosed are a filter for a smoking article and a smoking article comprising same. The filter for a smoking article comprises: a filter unit including a lyocell tow containing lyocell fibers and a phenolic functional additive dispersed in the lyocell tow; and a filter unit wrapper surrounding the filter unit, the phenolic functional additive including triethyl citrate (TEC) and polyethylene glycol (PEG), wherein the ratio of the triethyl citrate (TEC) and the polyethylene glycol (PEG) is 9:1 to 1:9.

Description

Filters for smoking articles and smoking articles containing the same

[0001] The present invention relates to a filter for a smoking article, comprising a filter part comprising lyocell tow having a phenolic functional additive dispersed therein, and a filter part wrapper formed of a hard paper surrounding the filter part, and a smoking article comprising the same.

[0002]

[0003] A typical cigarette filter contains cellulose acetate (CA) tow, which is acetylated and extracted from wood pulp. Furthermore, cigarette filters are assembled into cigarette products, distributed to consumers, provided for smoking, and ultimately disposed of after smoking. Furthermore, some cigarette filters are discarded directly from cigarette filter manufacturing plants as manufacturing residue. This cigarette filter waste is collected as waste and landfilled for disposal. Furthermore, in some cases, after smoking, the filters are not collected as waste and are left in the natural environment.

[0004] Accordingly, research is currently underway to replace cellulose acetate tow with eco-friendly materials to protect the natural environment and reduce costs. For example, tow using lyocell fiber, which is a fiberized form of cellulose itself, is being developed, unlike cellulose acetate.

[0005] In the manufacture of filters for smoking articles, phenol-reducing substances (hereinafter referred to interchangeably as "phenol-functional additives") capable of specifically reducing phenols generated during smoking are added to reduce phenol smoke components in mainstream smoke. Conventionally, it is known that polyethylene glycol (hereinafter referred to as "PEG"), triethyl citrate (hereinafter referred to as "TEC"), and triacetin (hereinafter referred to as "TA") are added to cellulose acetate tow as phenol-reducing substances.

[0006] Recently, research is being conducted to replace cellulose acetate tow with eco-friendly materials to protect the natural environment and reduce costs. For example, tow using lyocell fiber, which is a fiberized form of cellulose itself, is being developed, unlike cellulose acetate.

[0007] Meanwhile, due to the hydrophobic nature of the phenol-reducing material, the phenol-reducing material may be transferred from the inside of the tow to the filter wrapper, particularly to the area where the adhesive is applied in the filter wrapper. If the phenol-reducing material is transferred to the area where the adhesive is applied in the filter wrapper, the adhesive may be aged by the phenol-reducing material, causing the filter wrapper (adhesive area) to burst, thereby deteriorating the quality of the filter for smoking articles.

[0008] In addition, when the phenol-reducing material is transferred from the inside of the tow to the filter wrapper and tip paper due to the hydrophobic characteristics of the phenol-reducing material, there is a problem that the ink printed on the tip paper spreads due to the phenol-reducing material having the hydrophobic characteristics, thereby lowering the quality of the smoking article.

[0009] Therefore, there is a need to develop a filter material that can minimize the problems of filter roughness bursting or tip paper chair spreading by phenol-reducing substances applied to lyocell tow.

[0010]

[0011] The problem to be solved by the present invention is to provide a filter for a smoking article and a smoking article including the same, in which the composition ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) included in a phenol functional additive dispersed in lyocell tow is optimized, thereby minimizing the occurrence of bursting of the rap part (adhesive part) of the filter part wrapper wrapping the lyocell tow, thereby providing a filter for a smoking article having excellent phenol reduction performance and quality, and a smoking article including the same.

[0012] In addition, the problem to be solved by the present invention is to provide a filter for a smoking article and a smoking article including the same, in which the composition ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) included in a phenol functional additive dispersed in lyocell tow is optimized, thereby preventing the phenol functional additive in the lyocell tow from being transferred to the tip paper through the filter wrapper, thereby minimizing the occurrence of ink bleeding and / or design bleeding printed on the tip paper by the phenol functional additive.

[0013] In addition, the problem to be solved by the present invention is to provide a filter for a smoking article and a smoking article including the same, in which, despite applying a general hard paper, not an oil-resistant hard paper having an oil-resistant surface, to the filter wrapper, the problem of filter wrapper bursting, ink spreading, and / or design spreading is prevented through optimization of the composition ratio of triethyl citrate (TEC) and polyethylene glycol (PEG), thereby minimizing the phenol functional additive transferred from lyocell tow to the filter wrapper, thereby more effectively removing components such as phenols present in cigarette smoke components during smoking and providing an excellent biodegradable smoking article.

[0014] In addition, another problem to be solved by the present invention is to solve the problem of hardness reduction of lyocell tow by configuring the filter part wrapper that wraps the filter part including lyocell tow in a smoking article with a paper having a basis weight greater than a certain value and having an oil-resistant treatment on the surface (i.e., an oil-resistant hard paper), and to minimize the amount of phenol functional additives transferred from lyocell tow to the filter part wrapper, thereby more effectively removing components such as phenols present in cigarette smoke components during smoking and providing an excellent biodegradable smoking article.

[0015] The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0016]

[0017] According to one aspect of the present application, a filter for a smoking article comprises a lyocell tow including lyocell fibers, a filter part including a phenolic functional additive dispersed in the lyocell tow, and a filter part wrapper surrounding the filter part, wherein the phenolic functional additive includes triethyl citrate (TEC) and polyethylene glycol (PEG), and the ratio of the triethyl citrate (TEC) and the polyethylene glycol (PEG) is 9:1 to 1:9.

[0018] In some embodiments, the ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) in the phenol functional additive may be from 6:4 to 2:8.

[0019] In some embodiments, the ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) in the phenol functional additive may be from 4:6 to 3:7.

[0020] In some embodiments, the filter wrapper may comprise a paper having a basis weight of 40 gsm to 160 gsm.

[0021] In some embodiments, the filter element wrapper may be characterized as being an untreated paper.

[0022] In some embodiments, the phenolic functional additive may be present in an amount of 5% to 30% by weight relative to the total 100% by weight of the lyocell tow.

[0023] In some embodiments, the phenolic functional additive may be present in an amount of 7% to 20% by weight relative to the total 100% by weight of the lyocell tow.

[0024] According to another aspect of the present application, a smoking article comprises: a smoking material portion; a filter for a smoking article disposed downstream of the smoking material portion; and a tip paper wrapping the smoking material portion and the filter for a smoking article, wherein the filter for a smoking article comprises: a filter portion comprising lyocell tow including lyocell fibers, and a phenolic functional additive dispersed in the lyocell tow; and a filter portion wrapper surrounding the filter portion, wherein the phenolic functional additive comprises triethyl citrate (TEC) and polyethylene glycol (PEG), and the content of the polyethylene glycol (PEG) may be greater than the content of the triethyl citrate (TEC).

[0025] In some embodiments, the ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) in the phenol functional additive may be from 4.5:5.5 to 2.5:7.5.

[0026] In some embodiments, the ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) in the phenol functional additive may be from 4:6 to 3:7.

[0027] In some embodiments, the filter wrapper may comprise a paper having a basis weight of 40 gsm to 160 gsm.

[0028] In some embodiments, the filter element wrapper may comprise non-oil-treated paper.

[0029] In some embodiments, the phenolic functional additive may be present in an amount of 5% to 30% by weight relative to the total 100% by weight of the lyocell tow.

[0030] In some embodiments, the phenolic functional additive may be present in an amount of 7% to 20% by weight relative to the total 100% by weight of the lyocell tow.

[0031] In some embodiments, a smoking article may be provided comprising a filter for a smoking article as described above.

[0032]

[0033] According to a filter for a smoking article according to one embodiment and a smoking article including the same, a phenol functional additive having an optimal composition ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) is dispersed in lyocell tow to manufacture a filter for a smoking article, thereby minimizing the occurrence of bursting of the rap (adhesive portion) of a filter part wrapper covering the lyocell tow, thereby providing a filter for a smoking article having excellent phenol reduction performance and quality and a smoking article including the same.

[0034] In addition, according to a smoking article including a filter for a smoking article according to one embodiment, a phenol functional additive having an optimal composition ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) is dispersed in lyocell tow to manufacture a filter for a smoking article, thereby preventing the phenol functional additive inside the filter for a smoking article from being transferred to the tip paper through the filter part wrapper, thereby minimizing ink bleeding or design bleeding caused by the phenol functional additive on the tip paper.

[0035] In addition, in order to prevent the hydrophobic substances contained in the phenol functional additives from being transferred to the filter wrapper, a general non-oil-resistant paper is used instead of an oil-resistant paper, and by dispersing a phenol functional additive having an optimal composition ratio of triethyl citrate (TEC) and polyethylene glycol (PEG) in lyocell tow to manufacture a filter for a smoking article and a smoking article including the same, problems such as bursting of the filter wrapper, ink spreading, or design spreading can be prevented. Accordingly, by minimizing the amount of the phenol functional additive transferred from the lyocell tow to the filter wrapper, components such as phenols present in cigarette smoke during smoking can be more effectively removed, and an excellent biodegradable smoking article can be provided.

[0036] The effects according to the technical idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

[0037]

[0038] FIG. 1 is a drawing showing a schematic configuration of a smoking article according to one embodiment of the present invention.

[0039] Figure 2 is an image taken to check whether ink spreads in smoking articles of Examples 24-25 and Comparative Examples 2-3 of the present invention.

[0040]

[0041] 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 methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the attached drawings. However, the technical idea of ​​the present disclosure is not limited to the following embodiments and may be implemented in various different forms. The following embodiments are provided only to complete the technical idea of ​​the present disclosure and to fully inform those skilled in the art of the present disclosure of the scope of the present disclosure, and the technical idea of ​​the present disclosure is defined only by the scope of the claims.

[0042] When assigning reference numerals to components in each drawing, it should be noted that identical components are assigned the same numerals whenever possible, even if they appear on different drawings. Furthermore, when describing the present disclosure, if a detailed description of a related known configuration or function is deemed likely to obscure the gist of the present disclosure, such detailed description will be omitted.

[0043] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in the same sense as commonly understood by those of ordinary skill in the art to which this disclosure pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise. The terminology used herein is for the purpose of describing embodiments and is not intended to limit the disclosure. In this specification, singular forms also include plural forms, unless specifically stated otherwise.

[0044] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the present disclosure. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0045] As used herein, the terms “comprises” and / or “comprising” do not exclude the presence or addition of one or more other components, steps, operations and / or elements.

[0046] First, let's clarify some terms used in this specification.

[0047] As used herein, the term "smoking article" may mean any smokeable product or any product capable of providing a smoking experience, whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. For example, smoking articles may include smokeable products such as cigarettes, cigars, and cigarillos.

[0048] In this specification, “smoking material” may mean any type of material that can be used in smoking articles.

[0049] In this specification, “upstream” or “upstream direction” may mean a direction away from the smoker’s mouth, and “downstream” or “downstream direction” may mean a direction approaching the smoker’s mouth.

[0050] As used herein, the term "longitudinal direction" may refer to a direction corresponding to the longitudinal axis of a smoking article. The "longitudinal axis" of a smoking article may refer to an imaginary line extending along the main longitudinal direction of the smoking article. This axis typically extends from one end of the smoking article (e.g., the mouthpiece or filter end) to the opposite end (e.g., the combustion or heat source end).

[0051] As used herein, "Lyocell tow" comprises or consists of a plurality of Lyocell fibers. In some embodiments, Lyocell tow may mean a bundle formed by cross-linking adjacent Lyocell fibers.

[0052] As used herein, "lyocell fiber" may mean a fiber made of cellulose. In particular, lyocell fiber may be a fiber made of cellulose derived from or primarily derived from wood pulp, particularly a semi-synthetic fiber.

[0053] In this specification, “leaf” may mean reconstituted tobacco leaves.

[0054] As used herein, "reconstituted tobacco leaf" may mean a sheet made by combining tobacco by-products selected from the group consisting of stems, dust, particulates, and combinations thereof with a binder. In some embodiments, the reconstituted tobacco leaf is homogenized tobacco leaf.

[0055] As used herein, the term "non-circular cross-section" is defined as a cross-section whose shape is not circular but includes a plurality of protrusions. For example, a cross-section having a shape in which a plurality of protrusions branch and / or extend from the center and / or the center of the cross-section may be referred to as a non-circular cross-section. Here, "protrusion" may mean a distinct, extended segment or arm extending outward from the central core or joint point of the lyocell fiber cross-section.

[0056] In some embodiments, the lyocell fibers may have a Y-shaped cross-section with three protrusions branching and / or extending from the center and / or center of the cross-section, a cruciform cross-section with four protrusions, a star-shaped cross-section with five or more protrusions, or may have an O-shaped cross-section, but are not limited thereto.

[0057] In some embodiments, the lyocell fibers may include three or more protrusions branching and / or extending from the center and / or the center of the cross-section, preferably three protrusions.

[0058] In some embodiments, the lyocell fibers included in the lyocell tow may have a Y-shaped cross-section for use in cigarette filters.

[0059] In this specification, "basis weight" refers to the mass per unit area of ​​the paper and / or wrapper. The basis weight of the paper and / or wrapper can be determined by measuring the mass and area of ​​the paper and / or wrapper and dividing the mass of the paper and / or wrapper by the area. The unit of basis weight is gsm (gram per square meter), i.e. g / m 2 It could be.

[0060] In this specification, “hard paper” refers to paper having a basis weight greater than a certain value.

[0061] In some embodiments, “oil-resistant paper” may refer to paper having an oil-resistant treatment on the paper surface, and “oil-resistant hard paper” may refer to hard paper having an oil-resistant treatment on the paper surface.

[0062] In some embodiments, “normal paper” may refer to paper that has not been treated with an oil-resistant coating on its surface, and “normal hard paper” may refer to hard paper that has not been treated with an oil-resistant coating on its surface.

[0063] In this specification, “OP” is an abbreviation for “over print” and refers to a coating layer that protects the printed ink surface.

[0064] In this specification, “phenols” means a substance in which some of the hydrogens attached to the functional group of the aromatic hydrocarbon ring are replaced with hydroxyl groups (-OH).

[0065] In some embodiments, the phenols may include a substance selected from the group consisting of catechol, hydroquinone, m-cresol, p-cresol, o-cresol, phenol, resorcinol, and combinations thereof.

[0066] In some embodiments, the phenols include catechol, hydroquinone, m-cresol and p-cresol, o-cresol, phenol, and resorcinol.

[0067] The filter of the smoking article can capture at least a portion of the smoke components generated when the smoking article is smoked. In some embodiments, the filter of the smoking article can capture at least a portion of the phenols contained in the smoke components generated when the smoking article is smoked.

[0068] In this specification, “whiteness” may indicate the degree to which a surface is white. For example, “whiteness” may indicate whiteness according to CIE D65-10 and / or CIE whiteness and / or CIE whiteness index. For example, whiteness may be measured spectrophotometrically. For example, whiteness may be measured using a CCM device. For example, but not particularly limited to, the ColorEye 7000A Spectrophotometer from X-Rite may be used as the CCM device.

[0069] In this specification, “pumping resistance” means the static pressure difference between two ends of a sample when an airflow traverses the sample. For example, the suction resistance may mean the static pressure difference between two ends of a sample when traversed by an airflow under normal conditions where the volume flow rate is 17.5 mm per second at the discharge end. For example, the suction resistance may be measured using the method specified in ISO Standard 6565:2002.

[0070] In some embodiments, room temperature may mean 20° C. to 25° C.

[0071] In this specification, when no separate physical quantity is indicated, component % and component ratio mean weight % of component and weight ratio of component, respectively.

[0072] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the attached drawings.

[0073] FIG. 1 is a drawing showing a schematic configuration of a smoking article according to one embodiment of the present invention.

[0074] Throughout the specification, "smoking article" may refer to an article capable of generating an aerosol, such as a cigarette (cigarette), cigar, or the like. The smoking article may include an aerosol-generating material and / or an aerosol-forming substrate. Furthermore, the smoking article may include a solid material based on tobacco raw materials, such as tobacco leaf, tobacco ash, or reconstituted tobacco. The smoking material may include volatile compounds.

[0075] Additionally, throughout the specification, “upstream” or “upstream direction” means a direction away from the mouth of a user (consumer) who smokes the smoking article (100), and “downstream” or “downstream direction” means a direction toward the mouth of a user (consumer) who smokes the smoking article (100). For example, in the smoking article (100) illustrated in FIG. 1, the smoking material portion (10) is located upstream or in the upstream direction of the filter portion (20) included in the filter for the smoking article.

[0076] Furthermore, in this specification, the smoking article (100) is described as an example of a combustion-type cigarette, but is not limited thereto, and the smoking article (100) may correspond to a heated cigarette used with an aerosol generating device such as an electronic cigarette device.

[0077] Referring to FIG. 1, a smoking article (100) includes a smoking material portion (10), a filter portion (20), a smoking material portion wrapper (30a), a filter portion wrapper (30b), and a tip paper (40). The filter for a smoking article may include a filter portion (20) and a filter portion wrapper (30b) surrounding the filter portion (20). In the smoking article (100), the smoking material portion (10) is located upstream compared to the filter portion (20).

[0078] The smoking material portion (10) may be filled with a smoking material such as raw tobacco leaf, sheet tobacco, or a mixture of leaf tobacco and sheet tobacco. The processed smoking material may be filled into the smoking material portion (10) in the form of a sheet or a piece of paper. The smoking material portion (10) may have an elongated rod shape, and its length, circumference, and diameter are not particularly limited, but may be adjusted to a size generally used in the relevant technical field in consideration of the amount of smoking material filled, the preferences of the user (consumer), etc.

[0079] The smoking material portion (10) may include at least one aerosol-generating material selected from the group consisting of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The smoking material portion (10) may contain other additives such as flavoring agents, humectants, and / or acetate compounds. The aerosol-generating material and / or additives may be contained in the smoking material.

[0080] The above smoking material portion (10) may be wrapped by a smoking material portion wrapper (30a). Some of the cigarette smoke generated during the combustion process of a typical smoking material portion (10) is released into the atmosphere through the smoking material portion wrapper (30a) before passing through the cigarette filter, and the sidestream smoke causes discomfort to passive smokers. Various attempts have been made to reduce such sidestream smoke, such as adding fillers such as magnesium oxide, titanium oxide, cerium oxide, aluminum oxide, calcium carbonate, and zirconium carbonate to conventional cigarette paper. However, simply applying such fillers to reduce sidestream smoke results in a decrease in the smoking sensation, combustion extinguishment, and deterioration of the solidification property, and it has been difficult to solve the above-mentioned problem through an appropriate combination of materials included in the fillers. According to one embodiment of the present invention, a smoking material wrapper (30a) may be applied with a filler mixed with magnesium oxide (MgO) and / or magnesium hydroxide (Mg(OH)2), and calcium carbonate (CaCO3) to reduce sidestream smoke and prevent a decrease in smoking sensation, burning, and burnout.

[0081] A filter for a smoking article may be positioned downstream of the smoking material section (10). The filter section (20) of the filter for a smoking article is positioned downstream of the smoking material section (10) and functions as a filter through which aerosol substances generated from the smoking material section (10) pass immediately before being inhaled by a user (consumer). The filter section (20) may be manufactured from various materials or shapes.

[0082] A filter for a smoking article according to one embodiment of the present invention may include a filter portion (20) and a filter portion wrapper (30b) surrounding the filter portion (20). The filter portion (20) according to one embodiment of the present invention may basically include lyocell tow including a plurality of lyocell fibers and a phenolic functional additive dispersed in the lyocell tow.

[0083] The filter for a smoking article including the above lyocell tow can replace all or part of the filter section (20) of an existing smoking article. When replacing a part, the filter material previously used can be used together. Existing filter materials, such as a cellulose acetate filter or a hollow tube filter, can be used.

[0084] In Fig. 1, the filter unit (20) is illustrated as a mono filter consisting of a single filter, but is not limited thereto. For example, the filter unit (20) may be provided as a dual filter or triple filter having two or more filters to increase filter efficiency.

[0085] In some embodiments, when the filter unit (20) is provided as a dual filter or a triple filter, etc., one of the plurality of filters may be a filter including lyocell tow including the lyocell fiber of the present invention and a filter including a phenol functional additive dispersed in the lyocell tow (hereinafter, referred to as a lyocell filter), and another filter among the plurality of filters may be a cellulose acetate filter and / or a paper filter. In this case, the length of the lyocell filter of the present invention may have a length of 25% to 50% of the total length of the filter unit (20). In addition, although not shown, the inside of the filter unit (20) may further include a crushable capsule (not shown) having a structure in which a liquid containing a fragrance is wrapped with a film.

[0086] The filter part wrapper (30b) surrounds the filter part (20) and can package the filter part (20).

[0087] In some embodiments, the filter unit wrapper (30b) may include a roll. The filter unit wrapper (30b) may include a hard roll having a basis weight within a predetermined numerical range. The filter unit wrapper (30b) may include at least one of a general hard roll and an oil-resistant hard roll. The general hard roll may be a hard roll without an oil-resistant treatment on its surface, and the oil-resistant hard roll may be a hard roll with an oil-resistant treatment on its surface. Although not limited thereto, the inner surface of the filter unit wrapper (30b) facing the filter unit (20) may further include aluminum foil.

[0088] Hereinafter, in the present specification, hard paper may refer to paper having a basis weight exceeding a predetermined numerical range. In particular, hard paper may refer to paper 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.

[0089] In some embodiments, the filter wrapper (30b) may include a general hard paper. By applying a general hard paper instead of an oil-resistant hard paper to the filter wrapper (30b), the filter for smoking articles or smoking articles may have superior biodegradability compared to a filter or smoking article in which the oil-resistant hard paper is applied to the filter wrapper (30b). As described below, by applying an optimal composition ratio (mixing ratio) of TEC and PEG included in the phenol functional additive, the residual rate of the phenol functional additive in the filter portion (20) can be excellently maintained, thereby providing a high-quality filter for smoking articles even without applying an oil-resistant hard paper.

[0090] Meanwhile, the filter part wrapper (30b) includes or is composed of a hard paper having a weight greater than a predetermined value, so that it not only functions as a packaging material surrounding the filter part (20) including lyocell tow, but also can perform the function of imparting a certain level of hardness or greater to the filter for a smoking article according to the present invention.

[0091] Specifically, when the filter unit (20) is composed of lyocell tow in which a phenolic functional additive including PEG and TEC is dispersed, the phenolic functional additive may not plasticize the lyocell fibers, thereby reducing the hardness of the lyocell tow. In some embodiments, the filter unit wrapper (30b) surrounding the filter unit (20) may include or be composed of a hard paper having a basis weight greater than a predetermined value, thereby supplementing the hardness of the filter for smoking articles.

[0092] In some embodiments, the filter part wrapper (30b) may include a grease-resistant hard paper or a general hard paper other than the grease-resistant hard paper, and in particular may include a grease-resistant hard paper or a general hard paper other than the grease-resistant hard paper having a basis weight of 40 gsm to 160 gsm, 50 gsm to 158 gsm, 60 gsm to 155 gsm, 70 gsm to 150 gsm, or 75 gsm to 150 gsm. Since the filter part wrapper (30b) includes a paper having a high basis weight as described above, i.e., a hard paper, or is composed of a hard paper, the hardness of the filter part (20) including lyocell tow having a phenolic functional additive dispersed therein is supplemented by the filter part wrapper (30b), so that the hardness of the filter for smoking articles is at a certain level or higher, thereby solving the problem of reduced hardness of the filter for smoking articles.

[0093] In some embodiments, the filter part wrapper (30b) surrounding the filter part (20) may include a filter rough part (or referred to interchangeably as a 'filter rough') which is a bonding portion (area) to which an adhesive is applied. The filter rough part may be a part where the adhesive is applied and the filter part wrapper (30b) seals and fixes the filter part (20). The filter rough part may include a first part (or referred to as a 'seam part') which is a part where the filter part wrapper (30b) surrounding the filter part (20) is joined to each other, and a second part (or referred to as a '2') which is a joining area of ​​the filter part wrapper (30b) and the filter part (20). nd (referred to as 'part'). Specifically, the first part may be an area where adhesive is applied to the filter part wrapper (30b), particularly the area where the filter rolls overlap each other, when the filter part wrapper (30b) wraps the filter part (20). The second part may be an area in the remaining area of ​​the filter wrapper that comes into contact with the circumferential portion of the filter part.

[0094] In some embodiments, the adhesive applied to the first portion of the filter wrapper may be a hot melt (e.g., solid) adhesive that is melted by heating and then cooled to perform the function of adhering and / or fixing the joint portions of the filter wrapper (30b) to each other. The adhesive applied to the second portion of the filter wrapper may be a liquid adhesive. When applying a liquid adhesive to the first portion, a hot melt (e.g., solid) adhesive may be applied to the first portion of the filter wrapper to prevent the filter manufacturing efficiency from being lowered due to the additional drying time required for the liquid adhesive, but is not limited thereto.

[0095] In some embodiments, the adhesive applied to the first portion of the filter rubber portion may include ethylene vinyl acetate (EVA), and / or the adhesive applied to the second portion of the filter rubber portion may include at least one of ethylene vinyl acetate (EVA) and polyvinyl acetate (PVA), but is not limited thereto.

[0096] The smoking material portion (10) wrapped by the smoking material portion wrapper (30a) and the filter portion (20) wrapped by the filter portion wrapper (30b) can be combined and wrapped by the tip paper (40). The tip paper (40) can be wrapped around at least a portion (e.g., a downstream portion) of the smoking material portion wrapper (30a) and the periphery of the filter portion wrapper (30b) as illustrated in FIG. 1. In other words, at least a portion of the smoking material portion (10) and the filter portion (20) can be further wrapped and physically combined by the tip paper (40).

[0097] According to one embodiment of the present invention, the tip paper (40) may be manufactured from non-porous paper that has not been oil-treated, but is not limited thereto. In addition, the tip paper (40) may contain a non-combustible material to prevent the filter unit (20) from igniting, but is not limited thereto.

[0098] Additionally, although not shown in the drawing, the smoking article (100) may further include a hollow tube structure, which is a tube-shaped structure including a hollow space inside. The hollow tube structure may be positioned downstream of the lyocell filter.

[0099] In some embodiments, the hollow tube structure may have perforations, but is not limited thereto. The hollow tube structure may not have perforations. In some embodiments, when the hollow tube structure has perforations, the perforations may be formed at a position 10 mm to 15 mm upstream from the downstream end of the smoking article (100).

[0100] Hereinafter, a filter for a smoking article according to one embodiment of the present invention will be described in detail.

[0101] The present invention relates to a filter for a smoking article included in a smoking article (100), and a filter for a smoking article according to one embodiment of the present invention includes a filter part (20) including lyocell tow including lyocell fibers and a phenol functional additive dispersed in the lyocell tow, and a filter part wrapper (30b) surrounding the filter part (20).

[0102] The above lyocell fiber may be an eco-friendly fiber made from cellulose extracted from wood pulp. The above lyocell tow refers to a bundle formed by cross-linking adjacent lyocell fibers.

[0103] In some embodiments, lyocell fibers may have a non-circular cross-section. A non-circular cross-section is defined as a cross-section that is not circular but includes multiple protrusions. For example, a cross-section having multiple protrusions extending from a center may be considered non-circular.

[0104] 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 used herein have the same meanings as described above.

[0105] In one embodiment, the phenol functional additive is a substance that can specifically reduce phenol substances generated during smoking, and includes polyethylene glycol (hereinafter referred to as “PEG”) and triethyl citrate (hereinafter referred to as “TEC”). In some embodiments, the phenol functional additive may further include, but is not limited to, triacetin (hereinafter referred to as “TA”).

[0106] In some embodiments, the phenolic functional additive may be uniformly dispersed in the lyocell tow and distributed throughout the entire area of ​​the lyocell tow constituting the filter member (20).

[0107] In some embodiments, the phenolic functional additive may be included in the lyocell tow or uniformly dispersed on the surface of the lyocell fibers that make up the lyocell tow.

[0108] In some embodiments, the phenolic functional additive may be included in the lyocell tow or may be applied and uniformly dispersed on the surface of the lyocell fibers that make up the lyocell tow.

[0109] At least one of PEG and TEC included in the above phenol functional additives functions as a plasticizer for cellulose acetate fibers, but may not function as a plasticizer for lyocell fibers according to one aspect of the present application. Accordingly, in some embodiments, even though the phenol functional additive including PEG and TEC is applied on the surface of the lyocell fibers, the lyocell fibers may not be plasticized by the phenol functional additive.

[0110] A filter for a smoking article using lyocell tow according to the present invention may have a superior effect in reducing phenols generated during smoking compared to a filter for a smoking article not including a phenol functional additive by including a phenol functional additive including PEG and TEC dispersed on the surface of the lyocell fiber and / or the lyocell tow.

[0111] In some embodiments, the polyethylene glycol (PEG) included in the phenolic functional additive may have a weight average molecular weight (MW) of 100 to 2000. In some embodiments, but not limited thereto, the polyethylene glycol (PEG) may have a weight average molecular weight (MW) of 600.

[0112] In some embodiments, the weight ratio of the content of TEC and PEG, which are phenolic functional additives dispersed in the lyocell tow included in the filter unit (20), may be 9:1 to 1:9, 8:2 to 1.2:8.8, 7.5:2.5 to 1.5:8.5, 7:3 to 1.75:8.25, 6:4 to 2:8, 4.5:5:5 to 2.5:7.5, 4:6 to 3:7, and preferably 3:7.

[0113] Although not limited thereto, the content of PEG, which is a phenol functional additive included in the filter unit (20), may be greater than the content of TEC. By mixing the PEG content in the phenol functional additive with a large content compared to the TEC content, the phenol functional additive can be prevented from being transferred to the filter unit wrapper by the TEC, which has an oily property (oily). On the other hand, when mixing TEC and PEG, if the PEG is excessively high, there may be a problem that the manufacturing workability of the filter for smoking articles is reduced when spraying the phenol functional additive due to the high viscosity property of PEG. Therefore, the mixing ratio of TEC and PEG can be set in consideration of the properties of the above-described TEC and PEG.

[0114] According to one aspect of the present application, by optimizing the content ratio of TEC and PEG, which are phenol-based functional additives dispersed in the lyocell tow included in the filter part (20), the phenol-based functional additives dispersed in the filter part (20) can be prevented from being transferred to the filter part wrapper (30b), thereby preventing the filter rough part from bursting. In particular, when the phenol-based functional additives dispersed in the lyocell tow of the filter part (20) are transferred to the filter part wrapper (30b), the adhesive applied to the filter rough part may be aged by the phenol-based functional additive, thereby causing the filter rough part to burst. Therefore, by optimizing the content ratio of TEC and PEG, which are phenol-based functional additives for preventing the phenol-based functional additives from being transferred to the filter part wrapper (30b), the quality of the filter for smoking articles can be improved by minimizing the bursting of the filter rough part.

[0115] In addition, according to one aspect of the present application, by optimizing the ratio of the contents of TEC and PEG, which are phenol functional additives dispersed in the lyocell tow included in the filter section (20), it is possible to prevent the phenol functional additive dispersed in the filter section (20) from being transferred to the tip paper (40) through the filter section wrapper (30b). Meanwhile, ink may be printed on the tip paper (40), and when the phenol functional additive is transferred to the tip paper (40), a problem may occur in which the ink printed on the tip paper (40) melts and spreads due to the hydrophobic nature of the phenol functional additive. The filter for a smoking article according to the present invention can prevent the phenol functional additive from being transferred from the filter article (20) to the filter article wrapper (30b) or tip paper (40) by optimizing the ratio of the contents of TEC and PEG, which are phenol functional additives dispersed in the lyocell tow included in the filter section (20), thereby preventing the ink or design printed on the tip paper (40) from spreading due to the phenol functional additive, thereby improving the quality of the smoking article.

[0116] In addition, according to one aspect of the present application, it is possible to prevent problems such as the filter wrapper (30b) becoming wet with a phenol functional additive, resulting in a decrease in the hardness of the filter for smoking articles, or a decrease in the residual amount of the phenol functional additive remaining on the lyocell tow, resulting in a decrease in the phenol reduction performance.

[0117] In addition, according to one aspect of the present application, by optimizing the content ratio of TEC and PEG, which are phenol functional additives dispersed in lyocell tow included in the filter part (20), the phenol functional additive dispersed in the filter part (20) is prevented from being transferred to the filter part wrapper (30b), thereby providing a quality-improved smoking article filter or a smoking article including the same without filter wrapper bursting or ink spreading or design spreading of tip paper, especially when general hard paper that is not oil-resistant is applied as the filter part wrapper (30b).

[0118] In some embodiments, the content of the phenol functional additive dispersed in the lyocell tow included in the filter unit (20) may be 5 wt% to 30 wt%, 6 wt% to 25 wt%, 7 wt% to 20 wt%, 8 wt% to 18 wt%, 9 wt% to 16 wt%, or 10 wt% to 12 wt% relative to 100 wt% of the total lyocell tow, but is not limited thereto.

[0119] Hereinafter, the composition and resulting effects of the present invention will be described in more detail through examples and comparative examples. However, these examples are intended to more specifically illustrate the present invention, and the scope of the present invention is not limited to these examples.

[0120]

[0121] Experimental Example 1: Evaluation of the Effects of TEC and PEG Dosage on Filter Quality and Cigarette Quality

[0122]

[0123] Using filter manufacturing equipment KDF-2 (the same operating mechanism as the filter manufacturing equipment for cellulose acetate (CA) tow), the amount of TEC and PEG as phenol functional additives was adjusted to a smoking article filter having a length of 108 mm and a circumference of 24.2 mm based on the filter, and then the lyocell tow with the phenol functional additives dispersed therein was wrapped with a filter wrapper, which is a general hard paper or an oil-resistant hard paper having a basis weight of 75 gsm, to manufacture a smoking article filter having a length of 108 mm and a circumference of 24.2 mm. Henkel's ethylene vinyl acetate (EVA), a hot melt (solid type) adhesive, was used as an adhesive for the core of the filter rough part of the filter part wrapper surrounding the lyocell tow (the first part of the filter rough part or the paper joint part), and 2 of the filter rough part nd Polyvinyl Acetate (PVA) from Henkel was used as a liquid adhesive for the adhesive of the second part of the filter rubber or the central part of the paper.

[0124] The results of checking whether the filter roughness burst by storing the above-manufactured smoking article filter under harsh conditions of an internal temperature of 30°C to 50°C and a relative humidity of 10% to 90% for 4 weeks are shown in Table 1 below.

[0125] The harsh conditions may be conditions that periodically change the internal temperature and relative humidity within the harsh condition range. Whether the rough burst occurred is evaluated as having occurred when at least the second part of the filter rough part among the first part and the second part of the filter rough part falls off with the naked eye, and is evaluated as not having occurred when only a part of the first part of the filter rough part falls off or neither the first part nor the second part of the filter rough part falls off.

[0126] Next, the smoking article filters manufactured according to the amount of the TEC and PEG added and the type of the filter wrapper (general hard paper, oil-resistant hard paper) and the smoking material part to which 3 mg of tar was applied were combined with OP (over print) uncoated and fully printed tip paper to manufacture smoking articles, and the manufactured smoking articles were stored for 4 weeks at room temperature conditions of an internal temperature of 22°C and a relative humidity of 60% to check whether the design was smeared, and the results are shown in Table 1 below. The presence or absence of the design was evaluated by visually checking whether the ink printed on the tip paper was smeared and the degree of smearing, or whether the ink was smeared to other places and the degree of smearing.

[0127] In Table 1 below, the amount of phenol functional additive added (mg / rod) is the amount of phenol functional additive added based on lyocell tow having a length of 108 mm and a circumference of 24.2 mm.

[0128]

[0129] Phenol functional additive type Dosage (mg / rod) Application Wrapper (filter wrapper) Rough bursting Length spreading TEC Only 120 Regular hard wrapper Occurred Occurred 120 Oil-resistant hard wrapper Occurred Occurred 90 Regular hard wrapper Some Occurred Occurred 90 Oil-resistant hard wrapper Some Occurred Occurred 60 Regular hard wrapper Not occurred Occurred 60 Oil-resistant hard wrapper Not occurred Occurred PEG Only 140 Regular hard wrapper Not occurred Occurred 140 Oil-resistant hard wrapper Not occurred - 120 Regular hard wrapper Not occurred Some Occurred 120 Oil-resistant hard wrapper Not occurred - 90 Regular hard wrapper Not occurred Not occurred 90 Oil-resistant hard wrapper Not occurred - 70 Regular hard wrapper Not occurred Not occurred 70 Oil-resistant hard wrapper Not occurred - 50 Regular hard wrapper Not occurred Not occurred 50 Oil-resistant hard wrapper Not occurred -

[0130] As shown in Table 1 above, when TEC is applied alone as a phenol-based functional additive, rough bursting occurs as the dosage increases, and when PEG is applied alone as a phenol-based functional additive, rough bursting does not occur regardless of the dosage on the lyocell tow. In addition, when TEC is applied alone as a phenol-based functional additive at the same dosages of 90 mg / rod and 120 mg / rod, rough bursting occurs, but when PEG is applied alone as a phenol-based functional additive, rough bursting does not occur. In addition, when TEC is applied alone as a phenol-based functional additive, pattern spreading occurs regardless of the dosage, and when PEG is applied alone as a phenol-based functional additive, pattern spreading occurs to some extent when the dosage is 120 mg / rod or higher. In addition, when TEC was applied alone as a phenol functional additive at the same dosage of 90 mg / rod and 120 mg / rod, it was confirmed that the design spread occurred, but when PEG was applied alone as a phenol functional additive, no design spread occurred when 90 mg / rod was added, and some design spread occurred when 120 mg / rod was added.

[0131] The results in Table 1 above directly or indirectly confirm that TEC, due to its hydrophobic properties, is easily transferred to the filter wrapper (general hard paper, oil-resistant hard paper), which is the main cause of rough bursting and / or flaking. Therefore, it can be confirmed that the use of PEG over TEC is advantageous in ensuring the quality of the filter or smoking article, such as preventing rough bursting or flaking.

[0132]

[0133] Example 1

[0134] Using filter manufacturing equipment KDF-2 (the operating mechanism is the same as that of the filter manufacturing equipment for CA tow), a smoking article filter having a length of 108 mm, a circumference of 24.2 mm, and a suction resistance of 370 mmWG was prepared by spraying a phenolic functional additive having a weight ratio of TEC:PEG=8:2 onto lyocell tow at an amount of 100 mg / rod, and then wrapping the lyocell tow to which the phenolic functional additive was dispersed and added with a filter wrapper, which is a general hard paper having a basis weight of 75 gsm, to manufacture a smoking article filter having a length of 108 mm and a circumference of 24.2 mm, and combining the manufactured smoking article filter and the smoking material portion to which 3 mg tar was applied with a tip paper printed on the entire surface, to manufacture a smoking article.

[0135]

[0136] Example 2

[0137] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 1, except that the amount of phenol functional additive added was 70 mg / rod.

[0138]

[0139] Example 3

[0140] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 1, except that the weight ratio of TEC and PEG was TEC:PEG=6:4.

[0141]

[0142] Example 4

[0143] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 3, except that the amount of phenol functional additive added was 70 mg / rod.

[0144]

[0145] Example 5

[0146] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 1, except that the weight ratio of TEC and PEG was TEC:PEG=5:5.

[0147]

[0148] Example 6

[0149] A filter for smoking articles was manufactured in the same manner as in Example 5, except that the amount of phenol functional additive added was 70 mg / rod.

[0150]

[0151] Example 7

[0152] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 1, except that the weight ratio of TEC and PEG was TEC:PEG=2:8.

[0153]

[0154] Example 8

[0155] A filter for smoking articles was manufactured in the same manner as in Example 7, except that the amount of phenol functional additive added was 70 mg / rod.

[0156]

[0157] Example 9

[0158] A filter for smoking articles was manufactured in the same manner as in Example 1, except that the amount of phenol functional additive added was 125 mg / rod.

[0159]

[0160] Example 10

[0161] A filter for smoking articles was manufactured in the same manner as in Example 7, except that the amount of phenol functional additive added was 120 mg / rod.

[0162]

[0163] Experimental Example 2: Evaluation of the Effects of TEC and PEG Weight Ratio and Dosage on Filter Quality and Cigarette Quality

[0164]

[0165] The smoking article filters and smoking articles of Examples 1 to 10 were stored for 4 weeks under harsh conditions of an internal temperature of 30°C to 50°C and a relative humidity of 10% to 90%, and the results of checking whether the rough bursting of the smoking article filters and the design spreading of the smoking article were observed are shown in Table 2 below. The occurrence of rough bursting and the design spreading were evaluated in the same manner as in Experimental Example 1.

[0166]

[0167] Classification TEC: PEG Mixing ratio Injection amount (mg / rod) Rough bursting Long spreading Example 98: 2125 Occurred Occurred (small amount) Example 1100 Did not occur Did not occur Example 270 Did not occur Did not occur Example 36: 4100 Occurred Occurred (small amount) Example 470 Did not occur Did not occur Example 55: 5100 Occurred Did not occur Example 670 Did not occur Did not occur Example 102: 8120 Did not occur Did not occur Example 7100 Did not occur Did not occur Example 870 Did not occur Did not occur

[0168] As shown in Table 2 above, it can be confirmed that the quality of the design spreading or rough bursting is improved as the mixing ratio of PEG in the mixing ratio of TEC and PEG increases. Specifically, when comparing Examples 3, 5, and 7 in which the same amount of phenol functional additives was added, it can be confirmed that no design spreading occurred in Example 5 compared to Example 3, and neither rough bursting nor design spreading occurred in Example 7. In addition, in Examples 9 and 10 in which similar amounts of phenol functional additives were added, it can be confirmed that both rough bursting and design spreading occurred in Example 9, but neither rough bursting nor design spreading occurred in Example 10. From this, it can be confirmed that the appearance quality of the filter for smoking articles and smoking articles is improved as the mixing ratio of PEG increases.

[0169] Experimental Example 3: Evaluation of Phenol Reduction Performance of Filters for Smoking Articles by Weight Mixing Ratio and Dosage of TEC and PEG

[0170]

[0171] The smoking article filters of Examples 2, 4, 6, and 8, each having a length of 108 mm, were divided into four parts, and a smoking article filter of each having a length of 27 mm and a smoking material portion to which 3 mg of tar was applied were combined with a fully printed tip paper to manufacture a smoking article, and the manufactured smoking articles of Examples 2, 4, 6, and 8 were used as a smoking device, a cigarette smoking machine HAUNI LX20 manual (Linear type), and smoke components were captured using a Cambridge filter pad (CFP), and 30 mL of 1% acetic acid was added to extract the substances captured on the pad, followed by stirring, filtering with a 0.45 μm PVDF syringe filter, and analysis was performed using an Alliance HPLC-FLD analysis device from Water, and the results are shown in Table 3 below.

[0172]

[0173] Information Example 2 Example 4 Example 6 Example 8 Catechol (μg) 88.9 87.4 85.3 91.5 Hydroquinone (μg) 99.9 100.0 103.3 107.0 m+p cresols (μg) 13.3 11.4 9.4 12.4 o-Cresol (μg) 4.5 3.6 3.0 4.4 Phenol (μg) 20.7 16.1 12.5 15.9 Resorcinol (μg) 2.5 2.32 32.5

[0174] As shown in Table 3 above, referring to Examples 2, 4, and 6, it can be confirmed that as the weight mixing ratio of PEG in the TEC and PEG mixture increases, the amount of phenol migration decreases to 20.7 μg, 16.1 μg, and 12.5 μg, respectively, and the phenol reduction performance is excellent. However, in Example 8, although the weight mixing ratio of PEG increases compared to Example 6, the amount of phenol migration is 16.9 μg, and the phenol reduction performance is poor compared to Example 6. Accordingly, it can be confirmed that as the weight mixing ratio of PEG increases in the TEC and PEG mixture, the phenol reduction performance is excellent, but it can be confirmed that it is necessary to set the weight mixing ratio of TEC and PEG between Example 6 (TEC: PEG = 5: 5) and Example 8 (TEC: PEG = 2: 8) to set the optimal weight mixing ratio of TEC and PEG.

[0175] Example 11

[0176] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 1, except that the weight ratio of TEC and PEG was TEC:PEG=4:6.

[0177]

[0178] Example 12

[0179] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 11, except that the filter part wrapper was applied with an oil-resistant hard paper.

[0180]

[0181] Example 13

[0182] A filter for smoking articles was manufactured in the same manner as in Example 11, except that the amount of phenol functional additive added was 70 mg / rod.

[0183]

[0184] Example 14

[0185] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 13, except that the filter part wrapper was applied with an oil-resistant hard paper.

[0186]

[0187] Example 15

[0188] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 1, except that the weight ratio of TEC and PEG was TEC:PEG=3:7.

[0189]

[0190] Example 16

[0191] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 15, except that the filter part wrapper was applied with an oil-resistant hard paper.

[0192]

[0193] Example 17

[0194] A filter for smoking articles was manufactured in the same manner as in Example 15, except that the amount of phenol functional additive added was 70 mg / rod.

[0195]

[0196] Example 18

[0197] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 17, except that the filter part wrapper was applied with an oil-resistant hard paper.

[0198]

[0199] Experimental Example 4: Evaluation of the Effects of TEC and PEG Weight Ratio and Dosage on Filter Quality and Cigarette Quality

[0200]

[0201] The smoking article filters and smoking articles of Examples 11 to 18 were stored for 4 weeks under harsh conditions of an internal temperature of 30°C to 50°C and a relative humidity of 10% to 90%, and the results of checking whether the rough bursting of the smoking article filters and the design spreading of the smoking article were observed are shown in Table 4 below. The occurrence of rough bursting and the design spreading were evaluated in the same manner as in Experimental Example 1.

[0202]

[0203] Classification TEC: PEG Weight Mixing ratio Intake (mg / rod) Application Volume Rough Burst Rough Part 1 Rough Part 2 Design Spreading Example 114:6100 General Hard Does not occur Falls Does not fall Does not occur Example 12100 Oil-resistant Hard Does not occur Some falls Does not fall - Example 1370 General Hard Does not occur Falls Does not fall Does not occur Example 1470 Oil-resistant Hard Does not occur Some falls Does not fall - Example 153:7100 General Hard Does not occur Falls Does not fall Does not occur Example 16100 Oil-resistant Hard Does not occur Does not fall Does not fall - Example 1770 General Hard Does not occur Falls Does not fall Does not occur Example 1870 Oil-resistant Hard Does not occur Does not fall Does not fall -

[0204] As shown in Table 4, in Examples 11-14 where the weight ratio of TEC and PEG was 4:6 and in Examples 15-18 where the weight ratio was 3:7, it was confirmed that no rough bursting or smudging occurred, and thus it was confirmed that the quality of the filter for smoking articles and the smoking articles including the same was good for all of the TEC and PEG ratios of Examples 11 to 18. However, in Examples 16 and 18, the first part of the filter rough part did not fall off, but in Examples 12 and 14, it was confirmed that some of the first part of the filter rough part fell off, and thus it was confirmed that the quality was better when the weight ratio of TEC and PEG was 3:7 than when the weight ratio of TEC and PEG was 4:6.

[0205] Example 19

[0206] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 15, except that the phenol functional additive was added by spraying at an amount of 80 mg / rod based on a filter for a smoking article having a length of 108 mm, a circumference of 24.2 mm, and a suction resistance of 370 mmWG.

[0207]

[0208] Example 20

[0209] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 19, except that the filter part wrapper was applied with an oil-resistant hard paper.

[0210]

[0211] Example 21

[0212] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 19, except that the amount of phenol functional additive added was 60 mg / rod.

[0213]

[0214] Example 22

[0215] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 21, except that the filter part wrapper was applied with an oil-resistant hard paper.

[0216]

[0217] Example 23

[0218] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 19, except that the amount of phenol functional additive added was 40 mg / rod.

[0219]

[0220] Comparative Example 1

[0221] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 19, except that no phenol functional additive was added to the lyocell tow.

[0222]

[0223] Experimental Example 5: Evaluation of phenol reduction performance of a filter for smoking articles according to the amount of TEC:PEG = 3:7 weight ratio.

[0224]

[0225] The smoking article filters of Examples 19 to 23 and Comparative Example 1, each having a length of 108 mm, were divided into four parts, and a smoking article filter of 27 mm in length and a smoking material portion to which 3 mg of tar was applied were combined with a tip paper printed on the entire surface to manufacture a smoking article, and the manufactured smoking articles of Examples 19 to 23 and Comparative Example 1 were used as a smoking device using a cigarette smoking machine HAUNI LX20 manual (Linear type), and smoke components were captured using a Cambridge filter pad (CFP), and 30 mL of 1% acetic acid was added to extract the material captured in the pad, followed by stirring, filtering with a 0.45 μm PVDF syringe filter, and analysis was performed using an Alliance HPLC-FLD analysis device from Water, and the results are shown in Table 5 below.

[0226]

[0227] Division Dosage (mg / rod) Application Paper (Filter Wrapper) Phenol Migration Amount (μg) Comparative Example 10 General Hard Paper 44.3 Example 1980 General Hard Paper 14.7 Example 2080 Oil-Resistant Hard Paper 13.4 Example 2160 General Hard Paper 19.0 Example 2260 Oil-Resistant Hard Paper 17.4 Example 2340 General Hard Paper 24.5

[0228] As shown in Table 5 above, it can be confirmed that Examples 19 to 23, which applied a weight ratio of TEC and PEG of 3:7, reduced phenol by more than 50% compared to Comparative Example 1, in which no phenol functional additive was added.

[0229] Example 24

[0230] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 19, except that the amount of phenol functional additive was added by spraying at 10% by weight based on 100% by weight of the total lyocell tow.

[0231]

[0232] Example 25

[0233] A filter for a smoking article and a smoking article including the same were manufactured in the same manner as in Example 24, except that the filter part wrapper was applied with an oil-resistant hard paper.

[0234]

[0235] Experimental Example 6: Evaluation of physical properties and appearance quality of filters for smoking articles according to storage period with the optimal weight ratio of TEC and PEG (TEC:PEG=3:7)

[0236]

[0237] The smoking article filter of Example 24 was stored for 8 weeks under harsh conditions (internal temperature 30°C to 50°C and relative humidity 10% to 90%) and room temperature conditions (internal temperature 22°C, relative humidity 60%), and the physical properties and external quality of the smoking article filter were evaluated for each storage period (0 week, 4 weeks, 6 weeks, 8 weeks), and the results are shown in Table 6 below.

[0238]

[0239] Evaluation ItemsSave Conditions0 Week4 Week6 Week8 Main average STDAverage STDAverage STDAverage STDA Physical properties Quality Weight (mg) Harsh 91010.09129.391811.992111.8 Room temperature 94111.8--93811.3 Circumference (mmL) Harsh 24.30.124.30.124.30.124.30.1 Room temperature 24.30.1--24.30.1 Suction resistance (mmWG) Harsh 37314.038612.739517.040111.8 Room temperature 39916.2--39616.1 Hardness (%) Harsh 94.42.194.52.195.42.095.42.0 Room temperature 94.82.0--95.12.1 Appearance quality Rough burst Harsh Does not occur Does not occur Does not occur Does not occur Ink bleeding (smoking items) Does not occur Does not occur Does not occur Does not occur Off-odor Does not occur Does not occur Does not occur Discoloration Does not occur Does not occur Does not occur

[0240] (STD is standard deviation) As shown in Table 6 above, the smoking article filter of Example 24, manufactured by spraying a phenolic functional additive having a weight ratio of TEC and PEG of 3:7 onto lyocell tow, has similar physical property values ​​(weight, circumference, suction resistance, hardness) for each week under both harsh conditions and room temperature conditions, and it can be confirmed that it generally maintains the initial physical properties. In addition, it can be confirmed that Example 24 does not cause rough bursting, ink spreading, off-odor generation, or discoloration for each week under harsh conditions. Accordingly, it can be confirmed that the physical properties and appearance quality of the smoking article filter or smoking article are maintained regardless of the storage conditions when a phenolic functional additive having a weight ratio of TEC and PEG of 3:7 is added to lyocell tow.

[0241] Experimental Example 7: Evaluation of physical properties of smoking articles by storage period according to the type of paper used for smoking articles with the optimal weight ratio of TEC and PEG (TEC:PEG=3:7) - harsh conditions

[0242]

[0243] The smoking article filters of Examples 24 and 25, each having a length of 108 mm, were divided into four parts, and a smoking article filter of each having a length of 27 mm and a smoking material portion to which 3 mg of tar was applied were combined with a tip paper printed on the entire surface to manufacture a smoking article. The manufactured smoking articles of Examples 24 and 25 were stored under harsh conditions (internal temperature of 30°C to 50°C and relative humidity of 10% to 90%) for 12 weeks, and the physical properties (weight, circumference, suction resistance, whiteness) of the smoking article were evaluated for each storage period, and the results are shown in Table 7 below. Whiteness may refer to the whiteness of the cross-section of the smoking article filter.

[0244]

[0245] Item 0 Week 2 Week 4 Week 6 Week 8 Week 12 Week Example 24 (General hard paper) Weight (mg) 878.0 865 860.3-862.5 841.8 Circumference (mmL) 24.5 24.5 24.5 24.6 24.5 Suction resistance (mmWG) 141.0 138.5 141.5-142.2 137.3 Whiteness (B, %) 61.5 60.6 61.2-62.5 61.1 Example 25 (Oil-resistant hard paper) Weight (mg) 878.0--872.2-851.5 Circumference (mmL) 24.5--24.6-24.6 Suction resistance (mmWG) 141.0--141.6-139.3 Whiteness (B, %)61.5--62.1-60.8

[0246] As shown in Table 7 above, the smoking article of Example 24, in which a phenol functional additive having a weight ratio of TEC and PEG of 3:7 was sprayed onto lyocell tow and a general hard wrapper was applied, had similar physical property values ​​(weight, circumference, suction resistance, whiteness) for each week under harsh conditions and generally maintained the initial physical properties. In addition, it was confirmed that the smoking article of Example 24, in which a general hard wrapper was applied, and the smoking article of Example 25, in which an oil-resistant hard wrapper was applied, had similar values ​​for weight, circumference, suction resistance, and whiteness at the 12th week. Accordingly, it was confirmed that by applying the optimal mixing ratio of TEC and PEG, the physical property quality of the smoking article similar to that of the oil-resistant hard wrapper can be secured even when a general hard wrapper is applied without applying an oil-resistant hard wrapper. In other words, it was confirmed that there was no difference in the physical properties of the smoking article depending on the type of wrapper of the filter part.

[0247] Experimental Example 8: Evaluation of physical properties of smoking articles by storage period according to the type of paper used for smoking articles with the optimal weight ratio of TEC and PEG (TEC:PEG=3:7) - Room temperature conditions

[0248]

[0249] The smoking article filters of Examples 24 and 25, each having a length of 108 mm, were divided into four parts, and a smoking article filter of each having a length of 27 mm and a smoking material portion to which 3 mg of tar was applied were combined with a fully printed tip paper to manufacture a smoking article. The manufactured smoking articles of Examples 24 and 25 were stored at room temperature conditions (internal temperature 22°C and relative humidity 60%) for 8 months, and the physical properties (weight, circumference, suction resistance, whiteness) of the smoking articles were evaluated for each storage period (0, 1 month, 2 months, 4 months, 8 months), and the results are shown in Table 8 below.

[0250]

[0251] Item 0 months 1 month 2 months 4 months 8 months Example 24 (general hard paper) Weight (mg) 878.089 1.588 5.089 6.388 2.5 Circumference (mmL) 24.5 24.6 24.5 24.6 24.6 Suction resistance (mmWG) 141.0 144.2 144.8 146.7 143.9 Whiteness (B, %) 61.56 2.16 2.56 3.16 1.2 Example 25 (oil-resistant hard paper) Weight (mg) 878.0882.2880.6887.7879.8 Circumference (mmL) 24.524.624.624.624.6 Suction resistance (mmWG) 141.0143.4145.7144.3145.1 Whiteness (B, %) 61.561.863.063.261.5

[0252] As shown in Table 8 above, the smoking article of Example 24, in which a phenol functional additive having a weight ratio of TEC and PEG of 3:7 was sprayed onto lyocell tow and a general hard wrapper was applied, had similar physical property values ​​(weight, circumference, suction resistance, whiteness) for each month under room temperature conditions and generally maintained the initial physical properties. In addition, it was confirmed that the smoking article of Example 24, in which a general hard wrapper was applied, and the smoking article of Example 25, in which an oil-resistant hard wrapper was applied, had similar values ​​for weight, circumference, suction resistance, and whiteness for each month. Accordingly, it was confirmed that by applying the optimal mixing ratio of TEC and PEG, the physical property quality of the smoking article similar to that of the oil-resistant hard wrapper applied can be secured even when a general hard wrapper is applied without applying an oil-resistant hard wrapper. In other words, it was confirmed that there was no difference in the physical properties of the smoking article depending on the type of wrapper of the filter part.

[0253] Experimental Example 9: Evaluation of phenol reduction performance by storage period according to the type of paper of smoking articles applied with the optimal weight ratio of TEC and PEG (TEC:PEG=3:7) - harsh conditions

[0254]

[0255] The smoking article filters of Examples 24 and 25, each 108 mm long, were divided into four parts, and the smoking article filters of Examples 24 and 25, each 27 mm long, and the smoking material portion with 3 mg tar applied were combined with a fully printed tip paper to manufacture smoking articles. The manufactured smoking articles of Examples 24 and 25 were stored under harsh conditions (internal temperature 30 to 50°C and relative humidity 10 to 90%) for 12 weeks to evaluate the phenol reduction performance of the smoking articles according to the storage period. The phenol reduction performance evaluation was performed using a cigarette smoking machine HAUNI LX20 manual (Linear type) as a smoking device, and the smoke components were captured using a Cambridge filter pad (CFP), and 30 mL of 1% acetic acid was added to the captured pad to extract the substances, stirred, and filtered using a 0.45 μm PVDF syringe filter. The results were analyzed using an Alliance HPLC-FLD analysis device from Water Co., and the results are shown in Table 9 below.

[0256]

[0257] Item classification 0 weeks 4 weeks 6 weeks 8 weeks 12 weeks Phenol transfer amount (μg) Example 2422.0428.5531.7432.11 Example 2522.0431.8430.59

[0258] As shown in Table 9 above, in the smoking article of Example 24, in which a phenol functional additive having a medium mixing ratio of TEC and PEG of 3:7 was sprayed onto lyocell tow and a general hard wrapper was applied, the amount of phenol migration tended to increase up to 8 weeks under harsh conditions, but the amount of phenol migration decreased at 12 weeks, and it was confirmed to stabilize after 8 weeks. In addition, since the difference in the amount of phenol component migration between the smoking article of Example 25 and the smoking article of Example 24 at 12 weeks was not large, it was confirmed that the difference in phenol reduction performance depending on the type of wrapper of the filter part was not large.

[0259] Experimental Example 10: Evaluation of phenol reduction performance by storage period according to the type of paper of smoking articles applied with the optimal weight ratio of TEC and PEG (TEC:PEG=3:7) - Room temperature condition

[0260]

[0261] The smoking article filters of Examples 24 and 25, each having a length of 108 mm, were divided into four parts, and a smoking article filter of each having a length of 27 mm and a smoking material portion to which 3 mg of tar was applied were combined with a fully printed tip paper to manufacture smoking articles. The manufactured smoking articles of Examples 24 and 25 were stored at room temperature conditions (internal temperature 22°C and relative humidity 60%) for 8 months, and the phenol reduction performance of the smoking articles was evaluated for each storage period (0, 1 month, 2 months, 4 months, and 8 months). The phenol reduction performance was analyzed in the same manner as in Experimental Example 9, and the results are shown in Table 10 below.

[0262]

[0263] Item classification 0 months 1 month 2 months 4 months 8 months Phenol transfer amount (μg) Example 24 22.04 21.63 1.628.7 27.7 Example 25 22.04 23.13 0.5 27.7 26.9

[0264] As shown in Table 10 above, the smoking articles of Examples 24 and 25, in which a phenol functional additive having a weight ratio of TEC and PEG of 3:7 was sprayed onto lyocell tow and a general hard wrapper was applied, showed a tendency for the amount of phenol migration to increase after 2 months under room temperature conditions, but then decreased and stabilized after 8 months. In addition, since the difference in the amount of phenol migration between the smoking articles of Example 25 and Example 24 at each month was not large, it was confirmed that the difference in phenol reduction performance depending on the type of wrapper of the filter part was not large.

[0265] Comparative Example 2

[0266] A smoking article was manufactured in the same manner as in Example 24, except that the weight ratio of TEC and PEG was TEC:PEG=8:2.

[0267]

[0268] Comparative Example 3

[0269] A smoking article was manufactured in the same manner as in Comparative Example 2, except that the filter part wrapper was applied with a hard, oil-resistant paper.

[0270]

[0271] Experimental Example 11: Evaluation of ink bleeding according to the weight ratio of TEC and PEG and the type of paper.

[0272] Smoking articles of Examples 24-20 and Comparative Examples 2-3 were stored for 4 weeks under harsh conditions (internal temperature 30°C to 50°C and relative humidity 10% to 90%), and photographs were taken to determine whether ink bleeding occurred on tip paper, and the images are shown in Fig. 2. Fig. 2 (a) is an image of Example 24, (b) is an image of Example 25, (c) is an image of Comparative Example 2, and (d) is an image of Comparative Example 3 showing whether ink bleeding occurred.

[0273]

[0274] In Fig. 2 (a), (b), and (d), it can be confirmed that the ink printed on the tip paper does not smudge, and in Fig. 2 (c), the ink printed on the tip paper smudges. That is, when the weight ratio of TEC and PEG is applied as TEC:PEG=8:2 and added, the ink smudges if the filter wrapper is not applied as an oil-resistant hard paper, that is, if it is applied as a general hard paper, and when the weight ratio of TEC and PEG is applied as TEC:PEG=3:7 and added, it can be confirmed that the ink smudges do not occur regardless of the type of paper of the filter wrapper. Therefore, it can be confirmed that the quality of smoking articles can be maintained regardless of the type of filter wrapper by optimizing the mixing ratio of TEC and PEG.

[0275]

[0276] Experimental Example 12: Evaluation of the filter retention rate according to storage conditions and time of phenol functional additives.

[0277] In order to measure the residual rate in the lyocell tow of Example 24 according to the storage conditions and period, immediately after manufacturing the smoking article filter of Example 24, after storing it under room temperature conditions for 2 months, and then under harsh conditions for 2 months, each smoking article filter was randomly sampled, the weight of the smoking article filter sample was measured, and in order to measure the weight of the filter wrapper (i.e., filter paper), the lyocell tow portion was removed from the sampled smoking article filter, and the weight of the filter wrapper (i.e., filter paper) was measured. Next, 50 mL of the extraction solution included in the internal standard solution was added to each sampled filter, stirred for 60 minutes, and the TEC component was analyzed using GC-FID (DB-WAX column) and the PEG component was analyzed using an HPLD device to measure the residual amount of the phenol functional additive.

[0278] Next, the weight of the phenol functional additive included in the filter part was calculated by subtracting the weight of the phenol functional additive included in the filter part wrapper from the total weight of the phenol functional additive included in the filter for smoking articles, and the percentage of the weight of the phenol functional additive included in the filter part compared to the total weight of the phenol functional additive was calculated, and the value rounded to the first decimal place was used to calculate the residual rate in the filter part, and the measured residual amount and residual rate of the phenol functional additive are shown in Table 11 below.

[0279]

[0280] TECPEG Total (mg / cig) Filter Wrapper (mg / cig) Tow (mg / cig) Tow Residual Rate (%) Total (mg / cig) Filter Wrapper (mg / cig) Tow (mg / cig) Tow Residual Rate (%) Immediately after manufacturing 5.3 0.6 4.7 87.9 12.8 0.3 11.3 88.6 Room temperature condition, after 2 months 5.02 13.0 58.7 12.71 2.11 59 0.3 Severe condition, after 2 months 5.02 03.0 59.9 10.10.79.59 3.6

[0281] As shown in Table 11 above, it can be confirmed that the PEG residue in the lyocell tow (filter part) is 90% or higher regardless of the storage conditions and storage period. That is, it can be confirmed that the amount transferred from the lyocell tow (filter part) to the filter paper (filter part wrapper) is extremely small, and most of it remains stably in the lyocell tow (filter part). On the other hand, in the case of TEC, the residue in the lyocell tow (filter part) is about 87% immediately after manufacturing, but after 2 months of storage at room temperature or 2 months of storage under harsh conditions, the residue in the lyocell tow (filter part) is about 60% or less, and it can be confirmed that a large amount of TEC is detected in the filter paper. Accordingly, it can be confirmed that in the case of TEC, it is transferred from the lyocell tow (filter part) to the filter paper (filter part wrapper) during storage. Therefore, it can be confirmed that PEG in the phenol functional additive has the characteristic of remaining more stably in the lyocell tow than TEC.

[0282] Although the embodiments of the present disclosure have been described with reference to the attached drawings, those skilled in the art will appreciate that the present disclosure can be implemented in other specific forms without changing the technical concepts or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of protection of the present disclosure should be interpreted by the claims below, and all technical ideas within a scope equivalent thereto should be interpreted as being included within the scope of the technical ideas defined by the present disclosure.

Claims

1. A filter part comprising lyocell tow including lyocell fibers and a phenol functional additive dispersed in the lyocell tow; and Including a filter part wrapper surrounding the above filter part, The above phenol functional additives include triethyl citrate (TEC) and polyethylene glycol (PEG). The mixing ratio of the above triethyl citrate (TEC) and the above polyethylene glycol (PEG) is 9:1 to 1:

9. Filters for smoking articles.

2. In paragraph 1, The mixing ratio of the above triethyl citrate (TEC) and the above polyethylene glycol (PEG) is 6:4 to 2:

8. Filters for smoking articles.

3. In paragraph 2, The mixing ratio of the above triethyl citrate (TEC) and the above polyethylene glycol (PEG) is 4:6 to 3:

7. Filters for smoking articles.

4. In paragraph 1, The above filter part wrapper comprises a paper having a weight of 40 gsm to 160 gsm, Filters for smoking articles.

5. In paragraph 4, The above filter part wrapper is characterized by being a non-oil-treated paper. Filters for smoking articles.

6. In paragraph 1, The above phenol functional additive is 5 to 30 wt% based on the weight of the lyocell tow. Filters for smoking articles.

7. In paragraph 6, The above phenol functional additive is 7 to 20 wt% based on the weight of the lyocell tow. Filters for smoking articles.

8. Smoking substances section; A filter for smoking articles arranged downstream of the above smoking material section; and Including the tip paper wrapping the smoking material part and the filter for the smoking article, Filters for smoking items, Lyocell tow comprising lyocell fibers, and a filter section comprising a phenol functional additive dispersed in the lyocell tow, and Including a filter part wrapper surrounding the above filter part, The above phenol functional additives include triethyl citrate (TEC) and polyethylene glycol (PEG). The content of the polyethylene glycol (PEG) is greater than the content of the triethyl citrate (TEC). Smoking items.

9. In paragraph 8, The ratio of the triethyl citrate (TEC) and the polyethylene glycol (PEG) in the above phenol functional additive is 4.5:5.5 to 2.5:7.

5. Smoking items.

10. In paragraph 8, The ratio of the triethyl citrate (TEC) and the polyethylene glycol (PEG) in the above phenol functional additive is 4:6 to 3:

7. Smoking items.

11. In paragraph 8, The above filter part wrapper comprises a paper having a weight of 40 gsm to 160 gsm, Smoking items.

12. In paragraph 8, The above filter part wrapper comprises a non-oil-treated paper, Smoking items.

13. In paragraph 8, The above phenol functional additive is 5 to 30 wt% based on the weight of the lyocell tow. Smoking items.

14. In paragraph 8, The above phenol functional additive is 7 to 20 wt% based on the weight of the lyocell tow. Smoking items.

Images