A composition of a functional additive for a smoking product filter, a lyocell tow for a smoking product filter obtained using it, and a method for producing said tow

Abstract

Provided are: a functional additive composition applied to a smoking article filter; a lyocell tow for a smoking article filter, produced using same; and a production method therefor. The functional additive composition applied to a smoking article filter comprising a lyocell tow comprising a plurality of lyocell fibers comprises: a phenol-reducing material; polyethylene glycol (PEG); water; and an emulsion.

Description

Functional additive composition applied to a smoking article filter, lyocell tow for a smoking article filter manufactured using the same, and a manufacturing method thereof

[0001] The present invention relates to a functional additive composition applicable to a smoking article filter, lyocell tow for a smoking article filter manufactured using the same, and a manufacturing method thereof.

[0002]

[0003] A typical cigarette filter contains cellulose acetate 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 discarded 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, cigarettes left behind 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 cellulose itself converted into fibers, is being developed, unlike cellulose acetate.

[0005] Meanwhile, the manufacture of tow for cigarette filters involves an emulsion treatment involving phenol-based functional substances and emulsions. Conventional emulsion-treated lyocell tow undergoes a drying process, but this drying process evaporates the solids of the phenol-based functional substances and emulsions, resulting in a decrease in residual volume.

[0006] Therefore, there is a need to develop a filter material that can replace conventional cellulose acetate materials while achieving phenol reduction performance at a level equivalent to or higher than that of conventional technologies.

[0007]

[0008] The problem to be solved by the present invention is to provide a functional additive composition applied to a filter for a smoking article, which further includes PEG in a phenolic functional material, an emulsion, and water, thereby reducing the amount of volatilization of solids due to a drying process after fluid treatment of lyocell fibers, thereby minimizing the loss of phenolic functional materials in emulsion-treated lyocell fibers.

[0009] Another problem to be solved by the present invention is to provide a lyocell tow for a smoking article filter manufactured by applying the functional additive composition, by further including PEG in a phenolic functional material, an emulsion, and water, thereby reducing the amount of volatilization of solids by a drying process after fluid treatment of lyocell fibers and minimizing the loss of phenolic functional materials in the emulsion-treated lyocell fibers.

[0010] Another problem to be solved by the present invention is to provide a smoking article filter having an excellent phenol reduction effect by including lyocell tow manufactured using a functional additive composition.

[0011] Another problem to be solved by the present invention is to provide a method for manufacturing lyocell tow with reduced volatile solid content by a drying process after fluid treatment of lyocell fibers using an additive composition further comprising PEG in a phenol functional material, an emulsion, and water.

[0012] 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.

[0013]

[0014] A functional additive composition applied to a filter for a smoking article comprising lyocell tow including a plurality of lyocell fibers according to one embodiment for solving the above problem comprises: a phenol-reducing material; polyethylene glycol (PEG); water; and an emulsion.

[0015] Additionally, the phenol-reducing material may include triethyl citrate (TEC).

[0016] Additionally, the polyethylene glycol may have a weight average molecular weight of 50 to 10,000.

[0017] Additionally, the dispersion stability index (TSI) of the functional additive composition may be less than 0.5 to 11.5 for 6 hours.

[0018] Additionally, the dispersion stability index (TSI) of the functional additive composition may be 1.75 to 7.5 for 6 hours.

[0019] Additionally, the polyethylene glycol may have a weight average molecular weight of 150 to 3000.

[0020] In addition, the polyethylene glycol (PEG) has a weight average molecular weight of 500 to 1000, and the content of the polyethylene glycol may be 1 to 15 wt% based on the total weight of the functional additive composition.

[0021] Additionally, the content of the polyethylene glycol (PEG) may be 4 wt% to 11 wt% based on the total weight of the functional additive composition.

[0022] Additionally, the viscosity of the functional additive composition may be 1.5 to 5.0.

[0023] In addition, the functional additive composition may have a volatile content of solids in the functional additive composition of 0.3% to 3.5% when drying for 30 minutes at a drying temperature of 110°C, a heating rate of 20°C / min at room temperature, and an air injection rate of 60 ml / min using a TGA measuring device.

[0024] According to one embodiment of the present invention for solving the above-described other problems, a lyocell tow manufactured using a lyocell fiber and a functional additive composition comprises a phenol-reducing material, polyethylene glycol (PEG), water, and an emulsion.

[0025] In addition, the phenol-reducing material includes triethyl citrate (TEC), the polyethylene glycol (PEG) has a weight average molecular weight of 100 to 1000, and the content of the polyethylene glycol may include 4.5 wt% to 8.0 wt% based on the total weight of the functional additive composition.

[0026] In accordance with one embodiment of the present invention for solving the above-described further problem, a method for manufacturing lyocell tow comprising lyocell fibers comprises: a step of manufacturing a functional additive composition; a step of adding the functional additive composition to the lyocell fibers; and a step of drying the lyocell fibers to which the functional additive composition has been added, wherein the functional additive composition comprises a phenol-reducing material, polyethylene glycol (PEG), water, and an emulsion.

[0027] Additionally, the phenol-reducing material may include triethyl citrate (TEC).

[0028]

[0029] According to embodiments of the present invention, by further including PEG in the functional additive composition, a phenol functional material, an emulsion, and water, the amount of volatilization of solids due to a drying process after fluid treatment on lyocell fibers can be reduced, thereby minimizing the loss of phenol functional materials in emulsion-treated lyocell tow, and the phenol reduction performance of a smoking article filter using the lyocell tow can be improved.

[0030] In addition, by optimally designing the content or molecular weight of PEG included in the functional additive composition, the amount of volatilization of solids by the drying process after fluid treatment on lyocell fibers can be reduced, thereby minimizing the loss of phenol-based functional substances in the lyocell tow treated with the fluid, and the phenol reduction performance of a smoking article filter using the lyocell tow can be improved.

[0031] In addition, by further including PEG in addition to the phenol functional material, emulsion, and water in the functional additive composition, the dispersion stability of the functional additive composition is improved, so that the functional additive composition can be uniformly sprayed when treating lyocell fibers, and further, when manufacturing lyocell tow or a smoking article filter, there is an effect of easily manufacturing lyocell tow or a filter in which the functional additive composition is uniformly dispersed in the lyocell fibers.

[0032] 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.

[0033]

[0034] FIG. 1 is a drawing showing a schematic configuration of a smoking article according to one embodiment of the present invention.

[0035]

[0036] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The advantages and features of the present invention, and methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the attached drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0037] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in their common sense to those of ordinary skill in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0038] Additionally, the singular in this specification may also include the plural unless specifically stated otherwise in the text. 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.

[0039] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, the embodiments may be modified in various ways, and the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, or alternatives to the embodiments are included within the scope of the patent application.

[0040] The terms used in the examples are for the purpose of description only and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood to not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0041] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments pertain. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0042] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. When describing embodiments, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

[0043] Additionally, in describing components of an embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. 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.

[0044] Components included in one embodiment and components with common functions will be described using the same names in other embodiments. Unless otherwise stated, the descriptions given in one embodiment can be applied to other embodiments, and detailed descriptions will be omitted to the extent of overlap.

[0045]

[0046] FIG. 1 is a drawing showing a schematic configuration of a smoking article according to one embodiment of the present invention.

[0047] Throughout the specification, "smoking article" may refer to an article capable of generating an aerosol, such as a cigarette or cigar. The smoking article may include an aerosol-generating substance or an aerosol-forming substrate. Furthermore, the smoking article may include a solid substance based on tobacco raw materials, such as tobacco leaf, tobacco ash, or reconstituted tobacco. The smoking material may include volatile compounds.

[0048] In addition, throughout the specification, 'upstream' or 'upstream direction' means a direction away from the mouth of a user smoking the smoking article (1), and 'downstream' or 'downstream direction' means a direction toward the mouth of a user smoking the smoking article (1). For example, in the smoking article (1) illustrated in FIG. 1, the tobacco material portion (10) is located upstream or in the upstream direction of the filter portion (20) for the smoking article.

[0049] Furthermore, in this specification, the smoking article (1) is described as an example of a combustion-type cigarette, but is not limited thereto, and the smoking article (1) may correspond to a heated cigarette used with an aerosol generating device (not shown) such as an electronic cigarette device.

[0050]

[0051] The present invention relates to a functional additive composition that can be applied to the manufacture of a filter part (20, or smoking article filter) for a smoking article that can be applied to a smoking article (1), wherein the functional additive composition can be added to lyocell fibers when manufacturing lyocell tow composed of a plurality of lyocell fibers. Accordingly, the smoking article filter (20) according to the present invention can be comprised of lyocell tow composed of a plurality of lyocell fibers to which the functional additive composition is applied. The lyocell fiber is an environmentally friendly fiber made of cellulose extracted from wood pulp.

[0052] The lyocell tow included in the smoking article filter according to the present invention can be manufactured by adding a functional additive composition to a plurality of lyocell fibers and performing a drying process. A description of the method for manufacturing lyocell tow will be provided below.

[0053]

[0054] According to one embodiment of the present invention, a functional additive composition for a smoking article filter applied to a smoking article (1) includes a phenol functional material, an emulsion, water, and polyethylene glycol (PEG).

[0055] In some embodiments, the dispersion stability index (TSI) of the functional additive composition may be from 0.5 to 11.5, from 0.75 to 10.5, from 1.0 to 10, from 1.25 to 9.5, from 1.5 to 8.5, from 1.75 to 7.5, from 2.0 to 6.5, from 2.5 to 6, from 2.75 to 4.5, from 3.0 to 4.0, and preferably from 3.4 to 3.7 for 6 hours. A detailed description thereof will be provided below.

[0056] In some embodiments, the viscosity of the functional additive composition may be from 1.5 to 5.0, from 1.6 to 4.5, from 1.7 to 4.3, from 1.8 to 4.0, from 2.0 to 3.6, preferably from 2.3 to 3.4, and more preferably from 2.5 to 3.2.

[0057] In some embodiments, the functional additive composition may have a volatile content of solids in the functional additive composition of 0.3% to 3.5%, preferably 0.35% to 3.4%, when dried for 30 minutes at a drying temperature of 110°C, at a heating rate of 20°C / min from room temperature, and at an air injection rate of 60 ml / min using a TGA measuring device.

[0058] The phenol functional material refers to a material that can specifically reduce phenols generated during smoking. In one embodiment, the phenol functional material includes triethyl citrate (TEC). However, the phenol functional material is not limited thereto, and any phenol functional material may be used as long as it can reduce phenols generated during smoking. Hereinafter, for the convenience of explanation, the phenol functional material and the phenol reducing material may be referred to interchangeably.

[0059] In some embodiments, the phenolic functional material may be included in an amount of from 5 wt% to 15 wt%, preferably from 8 wt% to 12 wt%, and more preferably about 10 wt%, based on the total weight of the functional additive composition.

[0060] Unlike emulsions used for general fibers, the emulsion may be developed specifically for lyocell. In an exemplary embodiment, the emulsion minimizes the phenomenon of the filter shape being deformed by the smoker's saliva during smoking, thereby reducing the hardness of the filter. By imparting hydrophobic properties that delay the penetration of saliva into the filter, the emulsion can slow the rate at which filter hardness decreases. The emulsion may comprise a hydrophobic component.

[0061] In some embodiments, the emulsion may be included in an amount of 2.5 to 20 wt%, preferably 4 to 18 wt%, and more preferably 5 to 15 wt%, based on the total weight of the functional additive composition.

[0062] As described below, PEG can have the function of reducing the amount of volatile solids of a phenol functional material and an emulsion during a drying process after adding a functional additive composition to a plurality of lyocell fibers. In addition, PEG can improve the dispersion stability of the phenol functional material, water, and emulsion included in the functional additive composition by being included in the functional additive composition, thereby preventing the phenol functional material from clumping together in the functional additive composition. In addition, PEG can appropriately maintain the viscosity of the functional additive composition by being included in the functional additive composition.

[0063] In some embodiments, the PEG has a weight average molecular weight (MW) of 50 to 10,000, preferably 80 to 8,000, 100 to 5,000, 120 to 4,000, 150 to 3,000, 180 to 2,000, 200 to 1,500, 250 to 1,000, 300 to 1,000, 400 to 800, preferably 500 to 700. When the PEG has a molecular weight within the above range, the amount of solid content volatilized during the drying process can be reduced.

[0064] In some embodiments, PEG may be included in an amount of about 1 wt% to 15 wt%, 2 wt% to 14 wt%, 2.5 wt% to 13 wt%, 3.5 wt% to 12 wt%, 4 wt% to 11 wt%, 4.5 wt% to 10.5 wt%, 5 wt% to 10 wt%, preferably about 5.0 wt% or about 7.5 wt%, based on the total weight of the functional additive composition. When PEG is included within the above range, the viscosity and dispersion stability of the functional additive composition may be improved, while the amount of solid content volatilized during drying may be minimized.

[0065] The water content may be the portion of the total weight of the functional additive composition excluding the phenol functional material, emulsion, water, and PEG.

[0066] In some embodiments, the weight average molecular weight of the PEG included in the functional additive composition is from 500 to 1200, and the functional additive composition may have a dispersion stability index (TSI) of from 0.8 to 4.0 for 1 hour, from 1.0 to 6.0 for 3 hours, and from 2.2 to 8.5 for 6 hours.

[0067] In some embodiments, but not limited thereto, the functional additive composition can comprise PEG 1000, and the functional additive composition comprising PEG 1000 can have a dispersion stability index (TSI) for 1 hour of from 3.4 to 4.0, a dispersion stability index (TSI) for 3 hours of from 3.6 to 6.0, or a dispersion stability index (TSI) for 6 hours of from 5.6 to 8.5, or preferably, the functional additive composition can have a dispersion stability index (TSI) for 1 hour of from 3.5 to 3.7, a dispersion stability index (TSI) for 3 hours of from 5.5 to 5.7, or a dispersion stability index (TSI) for 6 hours of from 8.1 to 8.3.

[0068] In some embodiments, but not limited thereto, the functional additive composition can comprise PEG 600, and the functional additive composition comprising PEG 600 can have a dispersion stability index (TSI) for 1 hour of from 0.8 to 1.5, a dispersion stability index (TSI) for 3 hours of from 1.0 to 2.5, a dispersion stability index (TSI) for 6 hours of from 2.2 to 3.8, or preferably, the functional additive composition can have a dispersion stability index (TSI) for 1 hour of from 0.9 to 1.1, a dispersion stability index (TSI) for 3 hours of from 2.1 to 2.3, or a dispersion stability index (TSI) for 6 hours of from 3.4 to 3.7.

[0069] In some embodiments, but not limited thereto, the functional additive composition may include PEG 1000, and the functional additive composition including PEG 1000 may have a volatile content of solids in the functional additive composition of 1.7% to 4.0% when dried at a drying temperature of 110°C for 30 minutes at a temperature increase rate of 20°C / min from room temperature, an air injection rate of 60 ml / min using a TGA measuring device.

[0070] In some other embodiments, but not limited thereto, the functional additive composition may include PEG 600, and the functional additive composition including PEG 600 may have a volatile content of solids in the functional additive composition of 0.37% to 0.65% when dried for 30 minutes at a drying temperature of 110°C, a heating rate of 20°C / min from room temperature, and an air injection rate of 60 ml / min using a TGA measuring device.

[0071] Hereinafter, lyocell tow can be manufactured through the following manufacturing method. The manufacturing method includes the steps of preparing a plurality of lyocell fibers, preparing a functional additive composition, adding the functional additive composition to the lyocell fibers, and drying the lyocell fibers to which the functional additive composition has been added, wherein the functional additive composition includes a phenol functional material, an emulsion, water, and polyethylene glycol (PEG). The phenol functional material may include triethyl citrate (TEC).

[0072]

[0073] 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.

[0074]

[0075] Example 1

[0076] A functional additive composition comprising a phenol functional material, an emulsion, water, and PEG was prepared. The functional additive composition may be a solution. Specifically, the functional additive composition was prepared by adding 10 wt% of TEC, 70 wt% of water, 2.5 wt% of PEG 1000 having a weight average molecular weight of 1000, and 17.5 wt% of an emulsion content based on the total weight of the functional additive composition. Although not limited thereto, the viscosity of the functional additive composition according to Example 1 may have 1.5 to 3.5, 1.8 to 3.2, 2.0 to 3.0, 2.3 to 2.8, 2.4 to 2.7, and preferably 2.5 to 2.6.

[0077]

[0078] Example 2

[0079] A functional additive composition was prepared in the same manner as in Example 1, except that the content of PEG 1000 was added to the functional additive composition at 5 wt% and the content of the emulsion was added to 15 wt%. Although not limited thereto, the viscosity of the functional additive composition according to Example 2 may have a range of 2.0 to 5.0, 2.3 to 4.5, 2.4 to 4.0, 2.5 to 3.8, 2.6 to 3.6, 2.8 to 3.4, or preferably 3.0 to 3.3, more preferably 3.1 to 3.2.

[0080]

[0081] Example 3

[0082] A functional additive composition was prepared in the same manner as in Example 1, except that the content of PEG 1000 was added to the functional additive composition at 7.5 wt% and the content of the emulsion was added to 12.5 wt%.

[0083]

[0084] Example 4

[0085] A functional additive composition was prepared in the same manner as in Example 1, except that the content of PEG 1000 and the content of the emulsion were added to the functional additive composition at 10 wt% and 10 wt%, respectively.

[0086]

[0087] Comparative Example 1

[0088] A functional additive composition was prepared in the same manner as in Example 1, except that PEG 1000 was excluded from the functional additive composition and the oil content was added at 20 wt%.

[0089]

[0090] [Experimental Example 1]: Thermal Gravimetric Analysis (TGA) According to the Amount of PEG Added and the Reduction in Emulsion Content

[0091] Comparative Example 1 and Examples 1 to 4 were prepared by fixing the contents of TEC and water in the functional additive composition to 10 wt% and 70 wt%, respectively, and adjusting the content of the emulsion according to the amount of PEG 1000 added (no addition, 2.5 wt%, 5 wt%, 7.5 wt%, and 10 wt%).

[0092] Using the above Comparative Example 1 and Examples 1 to 4, the weight loss rate and solid volatile content according to the drying temperature and drying time were confirmed through TGA analysis, and the results are shown in Table 1 below. Specifically, on the other hand, the measuring method was to measure the solid volatile content by controlling the drying temperature (℃) and drying time (hr or min) up to the drying temperature (℃) at an air injection rate of 60 ml / min and a heating rate of 20 ℃ / min from room temperature using a TGA measuring device. The volatile content of small particles was calculated by excluding the volatile content of water from the total volatile content.

[0093]

[0094] Drying temperature Solid content Volatility content (%) Comparative example 1 Example 1 Example 2 Example 3 Example 4 1hr30min1hr30min1hr30min1hr30min1hr30min110℃6.532.825.912.134.331.36120℃8.174.157.443.336.091.875.241.515.421.62

[0095]

[0096] According to Table 1 above, the higher the drying temperature, the more volatile the solid content becomes. However, regardless of the drying temperature, when PEG is included in the functional additive composition (Examples 1 to 4), it can be confirmed that the volatile solid content decreases despite the decrease in the content of the emulsion compared to when PEG is not included (Comparative Example 1). In addition, it can be confirmed that the volatile solid content of Example 3, in which PEG 1000 is added at 7.5 wt% to the functional additive composition, is measured to be lower than that of Example 4, in which PEG 1000 is added at 10 wt%, and Example 2, in which PEG 1000 is added at 5 wt%, thereby minimizing the volatile solid content. Accordingly, it can be confirmed that there is an advantage in that the TEC can be prevented from decreasing during drying by further including PEG in the functional additive composition in the drying process for removing water.

[0097]

[0098] Example 5

[0099] The functional additive composition was prepared by adding 10 wt% of TEC content, 5 wt% of oil content, 2.5 wt% of PEG 1000 content, and 82.5 wt% of water content based on the total weight of the functional additive composition.

[0100]

[0101] Example 6

[0102] A functional additive composition was prepared in the same manner as in Example 5, except that the content of PEG 1000 was added to the functional additive composition in an amount of 5 wt% and the content of water was added to 80 wt%.

[0103]

[0104] Comparative Example 2

[0105] A functional additive composition was prepared in the same manner as in Example 5, except that PEG 1000 was not added to the functional additive composition and the water content was added at 85 wt%.

[0106]

[0107] [Experimental Example 2]: Thermogravimetric analysis (TGA) according to the amount of PEG 1000 added and the reduction in water content.

[0108] Comparative Example 2, Example 5, and Example 6 were prepared by fixing the contents of TEC and emulsion in the functional additive composition to 10 wt% and 5 wt%, respectively, and adjusting the water content according to the amount of PEG 1000 added (no addition, 2.5 wt%, 5 wt%).

[0109] Using the above Comparative Example 2 and Examples 5 and 6, the solid volatile content was measured using a TGA measuring device in the same measuring method as Experimental Example 1, with an air injection rate of 60 ml / min, a heating rate of 20°C / min from room temperature, and a drying time of 1 hr or 30 min until the drying temperature reached 110°C.

[0110]

[0111] Drying temperature Solid content Volatility content (%) Comparative example 2 Example 5 Example 6 1 hr 30 min 1 hr 30 min 1 hr 30 min 1 10 ℃ 8.6 3 5.3 9 5.7 0 3.3 8 4.0 5 1.79

[0112]

[0113] According to Table 2 above, when PEG 1000 is included in the functional additive composition (Examples 5 and 6), it can be confirmed that the volatile content of the solids is reduced despite the reduction in the water content compared to when PEG is not included (Comparative Example 2). In addition, it can be confirmed that as the amount of PEG 1000 added to the functional additive composition increases, that is, the volatile content of the solids in Example 6 decreases compared to Example 5.

[0114]

[0115] Example 7

[0116] The functional additive composition was prepared by adding 10 wt% of TEC content, 5 wt% of emulsion content, 5 wt% of PEG 600 content, and 80 wt% of water content based on the total weight of the functional additive composition. That is, Example 7 was prepared in the same manner as the functional additive composition of Example 6, except that the weight average molecular weight of PEG in Example 6 was 600.

[0117]

[0118] Example 8

[0119] A functional additive composition was prepared in the same manner as in Example 7, except that the content of PEG 600 was added to the functional additive composition at 7.5 wt% and the content of water was added to the functional additive composition at 77.5 wt%.

[0120]

[0121]

[0122] [Experimental Example 3]: Thermogravimetric analysis (TGA) according to the amount of PEG 600 added and the reduction in water content.

[0123] In Comparative Example 2, Example 7, and Example 8, the contents of TEC and emulsion were fixed at 10 wt% and 5 wt%, respectively, in the functional additive compositions, and the water content was adjusted according to the amount of PEG 600 added (no addition, 5 wt%, 7.5 wt%) to prepare a functional additive composition.

[0124] Using the above Comparative Example 2 and Examples 7 and 8, the solid volatile content was measured using a TGA measuring device in the same measuring method as Experimental Example 1, with an air injection rate of 60 ml / min, a heating rate of 20°C / min from room temperature, and a drying time of 1 hr or 30 min until the drying temperature reached 110°C.

[0125]

[0126] Drying temperature Solid content Volatility content (%) Comparative example 2 Example 7 Example 8 1 hr 30 min 1 hr 30 min 1 hr 30 min 1 10℃ 8.6 3 5.3 9 3.1 7 0.3 9 3.7 2 0.62

[0127] According to Table 3 above, when PEG 600 is included in the functional additive composition (Examples 7 and 8), it can be confirmed that the volatile content of the solids is reduced despite the reduction in the water content compared to when PEG is not included (Comparative Example 2). In addition, it can be confirmed that Example 7, in which the amount of PEG 600 added to the functional additive composition was 5 wt%, has a lower volatile content of the solids compared to Example 8, in which the amount of PEG 600 added was 7.5 wt%.

[0128]

[0129] Example 9

[0130] A functional additive composition was prepared in the same manner as in Example 1, except that the weight average molecular weight of PEG included in the functional additive composition was 600. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 600: 2.5 wt%, emulsion: 17.5 wt%)

[0131]

[0132] Example 10

[0133] A functional additive composition was prepared in the same manner as in Example 1, except that the weight average molecular weight of PEG included in the functional additive composition was 2000. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 2000: 2.5 wt%, emulsion: 17.5 wt%)

[0134]

[0135] Example 11

[0136] A functional additive composition was prepared in the same manner as in Example 1, except that the weight average molecular weight of PEG included in the functional additive composition was 4000. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 4000: 2.5 wt%, emulsion: 17.5 wt%)

[0137]

[0138] Example 12

[0139] A functional additive composition was prepared in the same manner as in Example 1, except that the weight average molecular weight of PEG included in the functional additive composition was 8000. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 8000: 2.5 wt%, emulsion: 17.5 wt%)

[0140]

[0141] Example 13

[0142] A functional additive composition was prepared in the same manner as in Example 9, except that the content of PEG included in the functional additive composition was 5 wt% and the content of the emulsion was 15 wt%. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 600: 5 wt%, emulsion: 15 wt%)

[0143]

[0144] Example 14

[0145] A functional additive composition was prepared in the same manner as in Example 10, except that the content of PEG included in the functional additive composition was 5 wt% and the content of the emulsion was 15 wt%. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 2000: 5 wt%, emulsion: 15 wt%)

[0146]

[0147] Example 15

[0148] A functional additive composition was prepared in the same manner as in Example 11, except that the content of PEG included in the functional additive composition was 5 wt% and the content of the emulsion was 15 wt%. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 4000: 5 wt%, emulsion: 15 wt%)

[0149]

[0150] Example 16

[0151] A functional additive composition was prepared in the same manner as in Example 12, except that the content of PEG included in the functional additive composition was 5 wt% and the content of the emulsion was 15 wt%. (i.e., TEC: 10 wt%, water: 70 wt%, PEG 8000: 5 wt%, emulsion: 15 wt%)

[0152]

[0153] [Experimental Example 4]: Thermogravimetric analysis (TGA) based on PEG weight-average molecular weight and content

[0154] In Example 1 and Examples 9 to 12, the functional additive composition was manufactured by fixing the contents of TEC and water to 10 wt% and 70 wt%, respectively, and the contents of PEG and emulsion to 2.5 wt% and 17.5 wt%, respectively, while controlling the weight average molecular weight of PEG.

[0155] In addition, in Examples 2 and 13 to 16, the contents of TEC and water in the functional additive composition were fixed at 10 wt% and 70 wt%, respectively, and the contents of PEG and emulsion were fixed at 5 wt% and 15 wt%, respectively, while the weight average molecular weight of PEG was controlled to prepare the functional additive composition. Lyocell fibers were immersed in the prepared functional additive composition and discharged, and then the lyocell fibers immersed in the functional additive composition were dried to prepare lyocell tow.

[0156] Using the above Comparative Example 1, Example 1, Example 2, and Examples 9 to 16, the total volatile content of the functional additive composition was measured using a TGA measuring device in the same measuring method as Experimental Example 1, with an air injection rate of 60 ml / min, a heating rate of 20°C / min from room temperature to a drying temperature of 120°C, and a drying time of 1 hr or 30 min.

[0157]

[0158] Total volatile content (%) Comparative Example 1 Example 9 Example 1 Example 10 Example 11 Example 12 1hr30min 1hr30min 1hr30min 1hr30min 1hr30min 1hr30min 78.1774.1574.5371.1077.4473.3376.3872.3477.1273.1276.4272.34 Comparative Example 1 Example 13 Example 2 Example 14 Example 15 Example 161hr30min1hr30min1hr30min1hr30min1hr30min1hr30min78.1774.1574.3471.9676.0971.8774.9171.4575.1871.5075.0271.33

[0159]

[0160] According to Table 4 above, it can be confirmed that the total volatile amount of Examples 1, 2, and 9 to 16, which contain PEG in the functional additive composition, is reduced compared to Comparative Example 1. In addition, it can be confirmed that the total volatile amount of Example 2 and Examples 13 to 16, which contain 5 wt% of PEG, is reduced compared to Example 1 and Examples 9 to 12, which contain 2.5 wt% of PEG in the case of the same weight average molecular weight. In addition, it can be confirmed that the total volatile amount of Examples 9 and 13, which contain PEG 600, is reduced compared to the other examples within the same PEG content. Accordingly, in the case of PEG 600, the performance of reducing the volatile amount of solids is improved, so that the residual amount of TEC, which is a phenol functional material in lyocell tow, is increased, and it is suitable for imparting the phenol reduction functionality to a smoking article filter manufactured using the lyocell tow.

[0161]

[0162] [Experimental Example 5]: Evaluation of Dispersion Stability of Functional Additive Compositions According to PEG Molecular Weight

[0163] The dispersion stability (Turbiscan Stability Index) of the functional additive compositions according to Comparative Example 2, Example 6, and Example 7 was evaluated.

[0164]

[0165] Dispersion Stability Index (TSI) Time 1 hr 3 hr 6 hr Comparative Example 24.7 10.0 12.1 Example 63.6 5.6 8.2 Example 71.0 2.2 3.6

[0166]

[0167] According to Table 5 above, Examples 6 and 7, in which PEG is included in the functional additive composition, have significantly lower dispersion stability indices than Comparative Example 2, indicating significantly superior dispersion stability. In particular, in the case of Example 7, the dispersion stability index after 6 hours is lower than that of Comparative Example 2 after 1 hour, confirming that Example 7 has significantly superior dispersion stability. Even as time passes, the dispersion stability of the functional additive composition is maintained at a high level, thereby improving the occurrence of separation of emulsion, water, and TEC in the functional additive composition, and enhancing the uniformity of each component within the functional additive.

[0168]

[0169] [Experimental Example 6]: Evaluation of Solid Volatility and TEC Residual Amount in Lyocell Tow According to PEG Molecular Weight

[0170] Lyocell fibers were immersed in the functional additive compositions prepared according to Examples 6 and 7, discharged, and then the lyocell fibers immersed in the functional additive composition were dried to prepare lyocell tow. Next, the residual amount of TEC in the lyocell tow was confirmed, and the results are shown in Table 6.

[0171] In addition, the functional additive compositions manufactured according to Comparative Example 1, Example 6 and Example 7 were subjected to TGA analysis at a heating rate of 20°C / min to a drying temperature of 110°C and a drying time of 30 min to measure the solid volatile content, and the results were shown in Table 6.

[0172]

[0173] Comparative Example 2 Example 6 Example 7 Solid content volatile amount (%, 110℃, 30 min) 5.39 1.79 0.39 Lyocell tow TEC residual amount (%) -8.46 8 9.775

[0174]

[0175] According to Table 6 above, it can be confirmed that the solid volatile amount of Example 6 and Example 7, which each contained PEG 1000 and PEG 600 in the functional additive composition, was significantly reduced compared to Comparative Example 2. In addition, it can be confirmed that Example 7, which included PEG 600, had a significantly reduced solid volatile amount and a higher TEC residual amount in the lyocell tow compared to Example 6, which included PEG 1000. That is, when PEG 600 was included, the TEC residual amount in the lyocell tow increased, and thus the phenol reduction function of the smoking article filter manufactured using the lyocell tow could be improved.

[0176]

[0177] The smoking article filter described above can be applied to a smoking article. FIG. 1 provides a schematic diagram illustrating the configuration of a smoking article according to one embodiment of the present invention. The smoking article (100) includes a smoking material portion (10) and a filter portion (20), and the smoking article filter described above is applied to the filter portion (20) of the smoking article (100). In the smoking article (100), the smoking material portion (10) is located upstream from the filter portion (20).

[0178] The above smoking material portion (10) may be filled with a smoking material such as raw leaf tobacco, sheet tobacco, or a mixture of leaf tobacco and sheet tobacco. The processed smoking material may be filled in the smoking material portion (10) in the form of a sheet or a cut tobacco. 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 user's preference, etc. 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 a flavoring agent, a humectant, and / or an acetate compound. The aerosol-generating material and additives may be contained in the smoking material.

[0179] The above filter unit (20) is arranged downstream of the smoking material unit (10) and functions as a filter through which aerosol substances generated from the smoking material unit (10) pass immediately before the user inhales them. The filter unit (20) can be manufactured from various materials or shapes. The filter unit (20) according to one specific example of the present invention basically includes the above-described cigarette filter including lyocell tow in which a plurality of lyocell fibers are bound by a binder. The cigarette filter including the lyocell tow can replace all or part of the filter unit (20) of an existing smoking article, and when replacing part of it, the filter material previously used can be used together. Existing filter materials, for example, a cellulose acetate filter, a hollow tube filter, etc. can be used.

[0180] 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 acetate filters to increase filter efficiency. In addition, although not illustrated, the filter unit (20) may include a crushable capsule (not illustrated) having a structure in which a liquid containing a fragrance is wrapped in a film.

[0181] The exterior of the above smoking material portion (10) and filter portion (20) can be wrapped by a wrapper (30a or 30b).

[0182] 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 specific example of the present invention, a smoking material wrapper (30a) is applied with a filler mixed with magnesium oxide (MgO and / or Mg(OH)2) and calcium carbonate (CaCO3) to reduce side smoke and prevent a decrease in smoking sensation, burning, and burnout.

[0183] The above filter part (20) can be wrapped by a filter part wrapper (30b). The filter part wrapper (30b) can be made of a paper having oil resistance, and the inner surface of the filter part wrapper (30b) may further include aluminum foil.

[0184] 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) may be combined and wrapped by a tip paper (40). The tip paper (40) may be wrapped around at least a portion (for example, 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) may be further wrapped and physically combined by the tip paper (40). According to one specific example of the present invention, the tip paper (40) may be made of a non-porous paper that has not been oil-resistant treated, but is not limited thereto. In addition, the tip paper (40) may prevent the filter portion (20) from burning by including a non-combustible material, but is not limited thereto.

[0185]

[0186] Those skilled in the art will appreciate that the present invention can be implemented in modified forms without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered illustrative rather than restrictive. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

Claims

1. A functional additive composition used in a smoking article filter comprising a lyocell tow comprising a plurality of lyocell fibres, wherein the composition comprises: a phenol reducing agent, polyethylene glycol (PEG), water and an emulsion.

2. The functional additive composition according to claim 1, characterized in that the substance that reduces the phenol content includes triethyl citrate (TEC).

3. The functional additive composition according to claim 1, characterized in that polyethylene glycol (PEG) has a weight-average molecular weight of 50 to 10,000.

4. The functional additive composition according to claim 1, characterized in that the functional additive composition has a Turbiscan stability index (TSI) of from 0.5 to less than 11.5 over 6 hours.

5. The functional additive composition according to claim 4, characterized in that the functional additive composition has a Turbiscan stability index (TSI) of 1.75 to 7.5 over 6 hours.

6. The functional additive composition according to paragraph 4, characterized in that the polyethylene glycol (PEG) has a weight-average molecular weight of 150 to 3000.

7. The functional additive composition according to claim 3, characterized in that the polyethylene glycol (PEG) has a weight-average molecular weight of 500 to 1000, and wherein the polyethylene glycol (PEG) is contained in an amount of 1 wt.% to 15 wt.% of the total weight of the functional additive composition.

8. The functional additive composition according to claim 7, characterized in that polyethylene glycol (PEG) is contained in an amount of 4 wt.% to 11 wt.% of the total weight of the functional additive composition.

9. The composition of the functional additive according to claim 1, characterized in that the composition of the functional additive has a viscosity from 1.5 to 5.

0.

10. The functional additive composition according to claim 1, characterized in that when measured using a thermogravimetric analysis (TGA) device under conditions of an air flow rate of 60 ml / min, a heating rate of 20°C / min from room temperature, a drying temperature of 110°C and a drying time of 30 minutes, the functional additive composition has a volatile solids content of from 0.3% to 3.5%.

11. A lyocell tow obtained using lyocell fibers and a functional additive composition, wherein the functional additive composition includes a phenol reducing agent, polyethylene glycol (PEG), water, and an emulsion.

12. The lyocell tow according to claim 11, characterized in that the substance that reduces the phenol content includes triethyl citrate (TEC), polyethylene glycol (PEG) has a weight average molecular weight from 100 to 1000, and wherein the polyethylene glycol (PEG) is contained in an amount from 4.5 wt.% to 8.0 wt.% of the total weight of the functional additive composition.

13. A method for producing a lyocell tow comprising lyocell fibres, comprising: preparing a functional additive composition, adding the functional additive composition to the lyocell fibres and drying the lyocell fibres to which the functional additive composition has been added, wherein the functional additive composition comprises a phenol reducing agent, polyethylene glycol (PEG), water and an emulsion.

14. The method according to claim 13, characterized in that the substance that reduces the phenol content comprises triethyl citrate (TEC).