Filter with functional binder and smoking article including same

Abstract

The present invention provides a smoking article filter including a lyocell tow containing a plurality of lyocell fibers, a phenol-related functional substance, and a binder, and a manufacturing method thereof, and provides a smoking article including the smoking article filter.

Description

[Technical field]

[0001] The present invention relates to a filter having a functionality-enhancing binder applied thereto and a smoking article including the same. [Background technology]

[0002] Lyocell is mainly composed of cellulose, and unlike cellulose acetate (CA), it contains almost no plasticizers that are harmless to the human body. For this reason, in order to manufacture filters using Lyocell and impart a certain level of hardness, a binder solution must be used. When Lyocell filters are mixed with substances such as triethyl citrate (TEC) and triacetin (TA) together with the conventional binder solution, layer separation of the solution occurs. When such a solution is used, the binder solution and substances such as TEC and TA cannot be sprayed uniformly onto the Lyocell tow, which is a problem. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, in order to overcome the problems and / or limitations of the prior art as described above, the present invention aims to provide a Lyocell filter for smoking articles, which is manufactured by homogeneously mixing Lyocell fibers with a binder and a substance such as triethyl citrate (TEC) and / or triacetin (TA), and a smoking article including the same.

[0004] However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person having ordinary skill in the relevant technical field from the following description. [Means for solving the problem]

[0005] According to one embodiment of the present invention, there is provided a filter for a smoking article, comprising a lyocell tow including a plurality of lyocell fibers, The present invention provides a filter for smoking articles, comprising a phenol-related functional substance and a binder.

[0006] According to one embodiment, there is provided a smoking article comprising a tobacco medium portion and a filter portion, The present invention includes a lyocell tow including a plurality of lyocell fibers, a phenol-related functional substance, an amphoteric binder, and an alcohol, The phenol-related functional substance is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA); The smoking article is characterized in that the amphoteric binder is one or more selected from the group consisting of cellulose-based binders and vinyl-based binders.

[0007] According to another aspect, there is provided a method for producing a filter for a smoking article, comprising the steps of: a) providing a lyocell tow comprising a plurality of lyocell fiber bundles; b) mixing an amphoteric binder with an alcohol, and then mixing a phenol-related functional material; c) dispersing the mixed solution into the lyocell tow; The phenol-related functional substance is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA); the amphoteric binder is at least one selected from the group consisting of a cellulose-based binder and a vinyl-based binder; The method for producing a cigarette filter is characterized in that the alcohol is propylene glycol (PG). Effect of the Invention

[0008] According to one aspect of the present invention, a lyocell filter can be provided in which fat-soluble substances such as triethyl citrate (TEC) and / or triacetin (TA) are more uniformly mixed, which has the advantage of more effectively removing components such as phenols present in tobacco smoke during smoking. In addition, the use of lyocell tow allows the manufacture of an environmentally friendly filter.

[0009] It should be understood that the effects of the present invention are not limited to the effects described above, but include all effects that can be inferred from the configuration of the invention described in the detailed description of the present invention or the claims. [Brief description of the drawings]

[0010] [Figure 1] 1 is a diagram showing a schematic configuration of a smoking article according to one embodiment of the present invention. [Diagram 2] 1 is a diagram showing a schematic configuration of a smoking article including a wrapper according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. However, various modifications can be made to the embodiments, and the scope of the patent application is not limited or restricted by such embodiments. It should be understood that all modifications, equivalents, and alternatives to the embodiments are included in the scope of the patent.

[0012] The terms used in the examples are used for explanatory purposes only and should not be construed as limiting. A singular expression includes a plural expression unless otherwise clearly indicated otherwise. In this specification, the terms "include" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preclude the presence or additional possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0013] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments belong. Terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the relevant art, and should not be interpreted as idealized or overly formal unless expressly defined in this application.

[0014] In addition, when describing the embodiments with reference to the accompanying drawings, the same reference numerals are used for the same components regardless of the reference numerals, and duplicated descriptions thereof will be omitted. When describing the embodiments, if it is determined that a detailed description of related prior art may make the gist of the embodiments unclear, the detailed description thereof will be omitted.

[0015] In addition, when describing components of the embodiments, terms such as first, second, A, B, (a), (b), etc. are used. Such terms are used only to distinguish the components from other components, and do not limit the nature, order, or sequence of the components.

[0016] Components having a common function to components included in one embodiment will be described using the same names in other embodiments. Unless otherwise stated, the description of one embodiment may be applied to other embodiments, and detailed description will be omitted to the extent that they overlap.

[0017] Throughout the specification, "smoking article" may mean anything capable of generating an aerosol, such as tobacco (cigarette), cigar, etc. Smoking articles may include an aerosol-generating substance or an aerosol-forming substrate. Smoking articles may also include solid substances based on tobacco raw materials, such as flat tobacco, shred, or reconstituted tobacco. Smoking substances may include volatile compounds.

[0018] Additionally, throughout the specification, "upstream" or "upstream direction" refers to a direction away from the mouth of a user who smokes the smoking article 1, and "downstream" or "downstream direction" refers to a direction toward the mouth of a user who smokes the smoking article 1. For example, in the smoking article 1 shown in Figures 1 and 2, the tobacco material portion 10 is located upstream or in the upstream direction of the tobacco filter portion 20.

[0019] In addition, in this specification, the smoking article 1 has been described as a combustible cigarette as an example, but is not limited to this, and the smoking article 1 can also be a heated cigarette used together with an aerosol generating device (not shown) such as an electronic cigarette device.

[0020] According to one embodiment of the present invention, there is provided a filter for a smoking article, comprising a lyocell tow including a plurality of lyocell fibers, A filter for a smoking article is provided, which comprises a binder solution containing a phenol-related functional substance and a binder.

[0021] The phenol-related functional substance corresponds to a substance that can specifically reduce phenols generated during smoking, and examples thereof include triethyl citrate (TEC) or triacetin (TA), or may correspond to all of these.

[0022] When the TEC or TA is included in the binder solution, the content may be 20 to 50 wt %. If the content is less than 20 wt %, the effect of reducing phenols is weak, and if the content exceeds 50 wt %, the adhesive strength of the binder solution is significantly reduced, making it difficult to realize an appropriate filter hardness.

[0023] The binder contained in the filter for smoking articles may vary in type depending on the method for manufacturing the filter, and may be a hydrophilic binder and / or an amphoteric binder having both water-soluble and oil-soluble properties.

[0024] When the filter for smoking articles contains a hydrophilic binder, the hydrophilic binder cannot be easily mixed with the lipid-soluble phenol-related functional material such as TEC, TA, etc., and the solution layers are separated during the preparation of the filter for smoking articles. Therefore, in this case, it is preferable to further add an emulsifier during the preparation of the filter, and the filter for smoking articles thus prepared further contains an emulsifier.

[0025] The emulsifier is preferably a food emulsifier because of its friendliness to smokers' health and the environment, and specific examples thereof include monoglycerides, diglycerides, and / or triglycerides.

[0026] When the filter for smoking articles includes an amphoteric binder, an environmentally friendly water-soluble solution used in the manufacture of the lyocell filter and a phenol-related functional material such as fat-soluble TEC, TA, etc. can be homogeneously mixed, and thus the phenol-related functional material can be uniformly dispersed in the lyocell tow, thereby effectively reducing components such as phenols present in tobacco smoke during smoking.

[0027] The type of such amphoteric binder may include a cellulose-based binder and / or a vinyl-based binder. Specific examples of the cellulose-based binder may be one or more selected from the group consisting of hydroxypropylmethylcellulose (HPMC), ethylcellulose (EC), methylcellulose (MC) and carboxymethylcellulose (CMC). Specific examples of the vinyl-based binder may be one or more selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA) and ethylene vinyl acetate (EVAc).

[0028] Among the types of amphoteric binders, it is more preferable to use a vinyl binder, and more preferably polyvinylpyrrolidone (PVP).

[0029] When polyvinylpyrrolidone (PVP) is used as the amphoteric binder, compared to other amphoteric binders, it has a lower viscosity when mixed with a fat-soluble phenol-related functional substance, so that the fat-soluble phenol-related functional substance can be mixed more uniformly and well. As a result, when producing a filter for a smoking article, it is possible to easily produce a filter in which the phenol-related functional substance is uniformly dispersed in the lyocell tow.

[0030] In addition to the binder and the phenol-related functional material, an alcohol may be further added and mixed to prevent the growth of microorganisms and fungi in the binder solution. The type of the alcohol may be a polyhydric alcohol, a monohydric alcohol such as ethyl alcohol, or a mixture thereof. Among the polyhydric alcohols, it is preferable to include propylene glycol (PG).

[0031] In addition, when propylene glycol (PG) is used, propylene glycol (PG) acts as a release agent, reducing the adhesion of lyocell tow to the filter equipment rolls, thereby increasing the efficiency of the filter manufacturing process.

[0032] When ethyl alcohol is used as the monohydric alcohol, 5 to 10% by weight can be used, and when propylene glycol is used as the polyhydric alcohol, 20 to 50% by weight can be used.

[0033] In addition, the smoking article filter may further contain capsules carrying a fragrance therein or may further contain a moisturizing agent, etc., depending on the application (combustion cigarette, electronic cigarette, etc.) and as necessary during production.

[0034] When such a fragrance-carrying capsule is included, it can provide a variety of flavor experiences, have the effect of masking unpleasant odors, and so on, thereby improving the satisfaction of the smoker, and by including the moisturizing agent, it can increase the amount of atomization more effectively compared to conventional smoking articles.

[0035] According to another aspect of the present invention, there is provided a smoking article comprising a tobacco medium portion and a filter portion, The present invention includes a lyocell tow including a plurality of lyocell fibers, a phenol-related functional substance, an amphoteric binder, and an alcohol, The phenol-related functional substance is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA); The smoking article is characterized in that the amphoteric binder is one or more selected from the group consisting of cellulose-based binders and vinyl-based binders.

[0036] The amphoteric binder and alcohol described herein may be substantially the same as the types of amphoteric binders contained in the smoking article filters described above, and may preferably include an amphoteric binder of polyvinylpyrrolidone (PVP) and an alcohol of propylene glycol (PG).

[0037] The tobacco medium part generally contains a tobacco substance containing nicotine, such as tobacco leaves, and may further contain excipients, such as binders and other additives. As an example, the tobacco medium contained in the tobacco medium part of the present invention may be manufactured in the form of granules containing a tobacco substance and excipients.

[0038] In the present invention, the tobacco material is a material that forms an aerosol-generating substrate, and may be tobacco shreds, tobacco stems, tobacco dust generated during tobacco processing, and / or tobacco leaf strips. The tobacco leaf may be at least one selected from the group consisting of flue-cured, burley, oriental, cigar leaf, and toasted tobacco, but is not limited thereto.

[0039] In addition, the filter portion of a smoking article according to one embodiment of the present invention may be divided into two or more segments and divided into a first filter portion, a second filter portion, etc., and regardless of the position in which they are arranged, if one of the two or more segments corresponds to a filter for a smoking article according to one embodiment of the present invention, it may be included in the scope of the present invention.

[0040] In addition, the smoking article may include a wrapper that wraps the above components in addition to the tobacco medium portion and the filter portion, and the wrapper may be made of a general filter paper. In addition, the tipping wrapper that connects the tobacco medium portion and the filter may be selectively formed with one or more perforations along the circumferential direction to allow external air to flow in and internal gas to flow out, thereby realizing the air dilution rate of the cigarette and controlling the amount of mainstream smoke components transferred.

[0041] The configuration and effects of the present invention will be described in more detail below based on examples and comparative examples. However, these examples are provided to more specifically explain the present invention, and the scope of the present invention is not limited to these examples.

[0042] -Example 1) Manufacturing method of Lyocell filter A lyocell tow with a tow fiber bundle of about 35,000 denier was used by using lyocell fibers with a fiber of about 3.0 denier. In addition, a binder solution, which is a mixture of a binder, TEC, and a solvent, was prepared. Specifically, the binder solution was prepared by adding 10% by weight of PVP (Polyvinylpyrrolidone) based on the total weight of the binder solution to 60% by weight of a solvent (a mixed solvent of 40% by weight of propylene glycol, 10% by weight of ethanol, and 10% by weight of water) and 30% TEC. The prepared binder solution was sprayed on the lyocell tow by a brush type spray. The binder solution was prepared by spraying 10 or 15% by weight based on the weight of the lyocell tow. The dried lyocell tow was wrapped in a cigarette paper to prepare a cigarette filter with an axial length of about 108 mm and a circumference of about 24.20 mm.

[0043] 2) Viscosity differences due to binder type The inventors have compared the viscosity difference according to temperature of polyvinylpyrrolidone (PVP), which is one of the vinyl binders, hydroxypropyl methylcellulose (HPMC), which is one of the cellulose binders, and polyester according to one embodiment of the present invention (Table 1).

[0044] [Table 1]

[0045] Both HPMC, a cellulose-based binder, and PVP, a vinyl-based binder, are amphoteric binders, and both of these binders can be mixed with fat-soluble TEC, but as shown in Table 1, HPMC has a higher viscosity when dissolved than PVP, so it does not disperse uniformly during the filter manufacturing process, and the tow adheres to the roller and gets caught in it, resulting in problems such as breakage of the tow. In contrast, PVP has a lower viscosity than HPMC, so there are no problems during the filter manufacturing process, and it has the advantage that the TEC material can be uniformly dispersed in the lyocell tow.

[0046] Polyester has low viscosity like PVP, but it is difficult to mix with TEC, which is a phenol-related functional material, and it must be dispersed uniformly using a surfactant or emulsifier. When using the surfactant or emulsifier (dispersing TEC in a polyester binder solution containing a surfactant or emulsifier), the viscosity increases.

[0047] 3) Preparation of polyester binder and polyvinylpyrrolidone (PVP) binder solution and confirmation of the effect of applied filters A polyester binder solution was prepared by mixing polyester binder with water, propylene glycol (PG) and ethyl alcohol (EtOH), and a PVP binder solution was prepared by mixing PVP binder with water, PG, EtOH and TEC. In the case of polyester, it is difficult to prepare a uniform binder solution because layer separation occurs when TEC is mixed, but in the case of PVP, it is an amphoteric binder and can be easily mixed with TEC, so a binder solution can be easily prepared.

[0048] Cigarettes were manufactured using the Lyocell filters to which the two types of binder solutions were applied, and the phenol smoke components of each cigarette were measured and compared. The results are shown in Table 2 below.

[0049] [Table 2]

[0050] As shown in Table 2, it can be seen that the reduction effect of phenol components is about 30% greater when the PVP binder solution is applied to the Lyocell filter than when the Polyester binder solution is applied to the Lyocell filter.

[0051] Although the embodiments have been described above with reference to the drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques may be performed in a different order than described, and / or the components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different manner than described, or may be replaced or substituted by other components or equivalents, and still achieve suitable results.

[0052] Accordingly, other implementations, embodiments, and equivalents of the claims are intended to be within the scope of the following claims.

Claims

1. A filter for a smoking article comprising a lyocell tow comprising a plurality of lyocell fibers, A filter for a smoking article comprising a binder solution containing a phenol-related functional substance and a binder.

2. 2. The filter for smoking articles according to claim 1, wherein the binder solution contains 20 to 50% by weight of a phenol-related functional substance.

3. 2. The filter for smoking articles according to claim 1, wherein the phenol-related functional substance is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA).

4. 2. The filter for smoking articles according to claim 1, wherein the binder is at least one selected from the group consisting of hydrophilic binders and amphoteric binders.

5. The binder is one or more hydrophilic binders selected from the group consisting of polyester and starch-based binders; The filter for smoking articles according to claim 1 , further comprising an emulsifier.

6. 6. The filter for smoking articles according to claim 5, wherein the emulsifier is at least one selected from the group consisting of monoglycerides, diglycerides, and triglycerides.

7. the binder is one or more amphoteric binders selected from the group consisting of cellulose-based binders and vinyl-based binders; The cellulose-based binder is at least one selected from the group consisting of hydroxypropylmethylcellulose (HPMC), ethylcellulose (EC), methylcellulose (MC) and carboxymethylcellulose (CMC); 2. The filter for smoking articles according to claim 1, wherein the vinyl binder is at least one selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA) and ethylene vinyl acetate (EVAc).

8. 2. The filter for smoking articles according to claim 1, wherein the binder is one or more vinyl-based binders selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA) and ethylene vinyl acetate (EVAc).

9. The filter for smoking articles according to claim 1, wherein the binder is polyvinylpyrrolidone (PVP).

10. The filter for smoking articles according to claim 4 , further comprising alcohol.

11. The filter for smoking articles according to claim 10, wherein the alcohol is propylene glycol (PG).

12. A smoking article comprising a tobacco medium portion and a filter portion, The present invention includes a lyocell tow including a plurality of lyocell fibers, a phenol-related functional substance, an amphoteric binder, and an alcohol, The phenol-related functional substance is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA); The smoking article, wherein the amphoteric binder is at least one selected from the group consisting of cellulose-based binders and vinyl-based binders.

13. 13. The smoking article of claim 12, wherein the amphoteric binder is one or more vinyl-based binders selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and ethylene vinyl acetate (EVAc).

14. 13. The smoking article of claim 12, wherein the amphoteric binder is polyvinylpyrrolidone (PVP).

15. 15. A smoking article according to any one of claims 12 to 14, wherein the alcohol is propylene glycol (PG).

16. A method for producing a filter for smoking articles, comprising the steps of: a) providing a lyocell tow comprising a plurality of lyocell fiber bundles; b) mixing an amphoteric binder with an alcohol, and then mixing a phenol-related functional material; c) dispersing the mixed solution into the lyocell tow; The phenol-related functional substance is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA); the amphoteric binder is at least one selected from the group consisting of a cellulose-based binder and a vinyl-based binder, The method for producing a cigarette filter, wherein the alcohol is propylene glycol (PG).

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