CN118555915A

CN118555915A - Filter using functional enhancement adhesive and smoking article comprising same

Info

Publication number: CN118555915A
Application number: CN202380017358.2A
Authority: CN
Inventors: 河成薰; 马京培; 梁真哲; 郑奉洙; 朱小英; 徐昇潼; 李廷薰; 郑钟喆; 秦尚佑; 黃永男
Original assignee: Kolon Industries Inc; KT&G Corp
Current assignee: Kolon Industries Inc; KT&G Corp
Priority date: 2022-04-21
Filing date: 2023-02-03
Publication date: 2024-08-27
Also published as: TW202341884A; WO2023204406A1; KR20230149942A

Abstract

The present invention provides a filter for a smoking article comprising a lyocell tow comprising a plurality of lyocell fibers, a phenolic-related functional substance, and a binder, and a method for producing the same, and also provides a smoking article comprising the filter for a smoking article.

Description

Filter using functional enhancement adhesive and smoking article comprising same

Technical Field

The present invention relates to filters using functional enhancing adhesives and smoking articles comprising the same.

Background

The main component of Lyocell (Lyocell) is cellulose, unlike cellulose acetate (Cellulose acetate, CA), and there is almost no plasticizer harmless to the human body. Therefore, a filter is manufactured using lyocell, and in order to impart a hardness of a prescribed level or more, a binder solution is required. When the lyocell filter is mixed with an existing binder solution and substances such as triethyl citrate (TRIETHYL CITRATE, TEC) and glyceryl triacetate (TRIACETIN, TA), delamination of the solution occurs. If such a solution is used, there arises a problem that the binder solution and substances such as triethyl citrate (TEC), glyceryl Triacetate (TA) and the like cannot be uniformly dispersed on the lyocell tow.

Disclosure of Invention

Problems to be solved by the invention

Accordingly, in order to overcome the problems and/or limitations of the prior art as described above, it is an object of the present invention to provide a lyocell filter for a smoking article, which is manufactured by uniformly mixing a substance such as triethyl citrate and/or glyceryl triacetate and a binder in lyocell fibers, and a smoking article including the same.

However, the problems to be solved by the present invention are not limited to the above-described problems, and the problems not set forth or other problems will be clearly understood by those of ordinary skill in the art of the present invention from the following description.

Means for solving the problems

According to an embodiment of the present invention, there is provided a filter for a smoking article including a lyocell tow including a plurality of lyocell fibers, the filter for a smoking article including a phenolic-related functional substance and a binder.

According to an aspect, there is provided a smoking article including a tobacco medium portion and a filter portion, the smoking article including a lyocell tow including the plurality of lyocell fibers, a phenolic-related functional substance, an amphoteric binder, and alcohol, the phenolic-related functional substance being one or more selected from the group consisting of triethyl citrate and glyceryl triacetate, the amphoteric binder being one or more selected from the group consisting of a cellulose-based binder and an ethylene-based binder.

According to another aspect, a method for manufacturing a filter for a smoking article, the method comprising: step a), preparing a lyocell filament bundle comprising a plurality of lyocell fiber bundles; step b), mixing the amphoteric adhesive and alcohol, and then mixing the phenolic related functional substances; and step c) of dispersing the mixed solution in the lyocell filament bundles, wherein the phenolic-related functional substance is one or more selected from the group consisting of triethyl citrate and glyceryl triacetate, the amphoteric binder is one or more selected from the group consisting of a cellulose binder and a vinyl binder, and the alcohol is propylene glycol.

Effects of the invention

According to one aspect of the present invention, there can be provided a lyocell filter in which substances such as triethyl citrate and/or glyceryl triacetate which are fat-soluble are more uniformly mixed, which has an advantage in that phenols and the like present in smoke components during smoking can be further effectively removed by the filter. And, an eco-friendly filter can be manufactured by using the lyocell tow.

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 deduced from the detailed description of the present invention or the constitution of the invention described in the scope of the invention claimed.

Drawings

Fig. 1 is a diagram showing a schematic structure of a smoking article according to an embodiment of the present invention.

Figure 2 is a diagram illustrating a schematic structure of a smoking article comprising wrapper according to one embodiment of the present invention.

Detailed Description

Hereinafter, various embodiments are described in detail with reference to the accompanying drawings. However, various modifications may be made in the embodiments, and the scope of the invention is not limited or restricted by these embodiments. It should be understood that all changes, equivalents and even alternatives to the embodiments are included within the scope of the invention as claimed.

The terminology used in the embodiments is for the purpose of description only and should not be interpreted as having a limiting intent. Singular expressions include plural expressions unless the context clearly indicates otherwise. It will be understood that the terms "comprises" or "comprising," when used in this specification, specify the presence of stated features, integers, steps, actions, components, elements, or groups thereof, but do not preclude the presence or addition of one or more other features or integers, steps, actions, components, elements, or groups thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments belong. Terms commonly used, such as terms defined in dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In the description with reference to the drawings, the same reference numerals are given to the same components regardless of the reference numerals, and the repetitive description thereof will be omitted. In describing the embodiments, if it is considered that detailed description of the related known art may unnecessarily obscure the gist of the embodiments, detailed description thereof will be omitted.

In describing the constituent elements of the embodiments, the terms first, second, A, B, (a), (b), and the like may be used. Such terms are merely used to distinguish its constituent elements from other constituent elements, and the nature, order, sequence, etc. of the constituent elements are not limited by the terms thereof.

Constituent elements included in any one embodiment and constituent elements including common functions are described using the same names in other embodiments. Unless otherwise stated, the descriptions in any one embodiment are applicable to other embodiments, and detailed descriptions thereof are omitted in the scope of repetition.

Throughout the specification, "smoking article" may mean an article that can produce an aerosol, such as tobacco (cigarette), cigar, or the like. The smoking article may comprise an aerosol-generating substance or an aerosol-forming substrate. Also, the smoking article may comprise a solid substance based on tobacco material, such as lamina tobacco, cut tobacco, reconstituted tobacco, and the like. The smoking material may comprise a volatile compound.

Also, throughout the specification, "upstream" or "upstream direction" refers to a direction away from the mouth of the user who is used to draw the smoking article 1, and "downstream" or "downstream direction" refers to a direction closer to the mouth of the user who is used to draw the smoking article 1. For example, in the smoking article 1 shown in fig. 1, the tobacco substance portion 10 is located upstream or in the upstream direction of the tobacco filter portion 20.

Further, the combustion type cigarette of the smoking article 1 is described herein as an example, but the present invention is not limited thereto, and the smoking article 1 may correspond to a heating type cigarette or the like used together with an aerosol generating device (not shown) such as an electronic cigarette apparatus.

According to an embodiment of the present invention, there is provided a filter for a smoking article including a lyocell tow including a plurality of lyocell fibers, the filter for a smoking article characterized by comprising a binder solution containing a phenolic-related functional substance and a binder.

The phenol-related functional substance corresponds to a substance capable of specifically reducing phenols generated during smoking, and may be triethyl citrate (TRIETHYL CITRATE, TEC) or glyceryl triacetate (TRIACETIN, TA), for example, or may correspond to all of them.

When the TEC or TA is contained in the binder solution, the content thereof may be 20 to 50 wt%, and when less than 20 wt% as described above, the phenol reducing effect is weakened, and when more than 50 wt%, the adhesion of the binder solution becomes very poor, so that it may be difficult to achieve an appropriate filter hardness.

The binder contained in the filter for a smoking article may vary in kind depending on the manufacturing method of the filter, and may correspond to a hydrophilic binder, and/or an amphoteric binder having both water solubility and fat solubility.

In the case where the filter for a smoking article contains a hydrophilic binder, when the filter for a smoking article is manufactured, a phenol-related functional substance such as a fat-soluble TEC, TA, or the like is not easily mixed with the hydrophilic binder, and thus, there is a possibility that a delamination phenomenon of the solution occurs. Therefore, in this case, when the filter is manufactured, it is preferable that an emulsifier is further added, and the filter for a smoking article manufactured thereby further contains the emulsifier.

The emulsifier is preferably a food-grade emulsifier for the health and environmental protection of the smoker, and may correspond to monoglyceride (Monoglyceride), diglyceride (DIGLYCERIDE) and/or Triglyceride (Triglyceride), as a specific example.

When the filter for a smoking article comprises an amphoteric binder, an environmentally friendly water-soluble solution used in the manufacture of the lyocell filter and a phenol-related functional substance such as a fat-soluble TEC, TA can be uniformly mixed, whereby the phenol-related functional substance is uniformly dispersed in the lyocell tow, and thus components such as phenols present in smoke components during smoking can be effectively reduced.

As a specific example of the cellulose-based binder, one or more selected from the group consisting of hydroxypropyl methylcellulose (HPMC), ethyl Cellulose (EC), methyl Cellulose (MC), and carboxymethyl cellulose (CMC), and one or more selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and ethylene-vinyl acetate (EVAc).

On the other hand, among the kinds of the amphoteric binders, more preferably, a vinyl binder may be included, and further preferably, polyvinylpyrrolidone (PVP) may be used.

When polyvinylpyrrolidone (PVP) is used as the amphoteric binder, the viscosity is lower when mixed with the fat-soluble phenol-related functional substance than other amphoteric binders, so that the fat-soluble phenol-related functional substance can be more uniformly mixed, and further, when a filter for a smoking article is manufactured, there is an effect that a filter in which the phenol-related functional substance is uniformly dispersed in lyocell tow can be easily manufactured.

In addition, in addition to the binder and the phenolic-related functional substance, alcohol may be contained to be mixed to prevent proliferation of microorganisms and fungi in the binder solution, and the kind of alcohol may correspond to a monohydric alcohol such as polyol, ethanol, or a mixture thereof, preferably Propylene Glycol (PG) is contained in the polyol.

On the other hand, when the Propylene Glycol (PG) is used, the Propylene Glycol (PG) has a function of a release agent to reduce the phenomenon that the lyocell tow adheres to the filter device roller and the roller, thus improving the efficiency of the filter manufacturing process.

When ethanol is used as the monohydric alcohol, 5 to 10% by weight may be used, and when propylene glycol is used as the polyhydric alcohol, 20 to 50% by weight may be used.

In the production of the filter for smoking articles, the filter may further include a capsule containing a flavor therein, or may further include a humectant, etc., depending on the application (e.g., combustion type cigarette, electronic cigarette, etc.) and the need.

When such a capsule filled with a flavor is contained, various flavor experiences, an effect of masking unpleasant odors, and the like can be exhibited, so that the satisfaction of a smoker can be improved, and by containing the humectant, the amount of atomization can be effectively increased as compared with existing smoking articles.

According to another aspect of the present invention, there is provided a smoking article comprising a tobacco medium portion and a filter portion, the smoking article being characterized by comprising the lyocell tow containing a plurality of lyocell fibers, a phenolic-related functional substance selected from one or more of the group consisting of triethyl citrate (TEC) and glyceryl Triacetate (TA), an amphoteric binder, and alcohol, the amphoteric binder being selected from one or more of the group consisting of a cellulose-based binder and a vinyl-based binder.

The amphoteric adhesive and alcohol described herein are substantially the same as those contained in the filter for a smoking article, and preferably comprise an amphoteric adhesive of polyvinylpyrrolidone (PVP) and alcohol of Propylene Glycol (PG).

On the other hand, the tobacco medium portion generally contains a tobacco material, such as tobacco leaf, which contains nicotine, and may further contain an excipient, such as a binder or other additives, etc., and as an example, the tobacco medium contained in the tobacco medium portion of the present invention may be manufactured in a particulate form containing the tobacco material, the excipient, etc.

In the present invention, the tobacco material is a substance forming an aerosol-generating substrate, and may be tobacco lamina, stems, tobacco dust generated during tobacco processing, and/or lamina strips of tobacco leaves. The tobacco leaf may be at least one selected from flue-cured tobacco leaf, burley tobacco leaf, oriental tobacco leaf, cigar tobacco leaf and cured tobacco leaf, but is not limited thereto.

In addition, the filter portion of the smoking article according to one embodiment of the present invention may be divided into two or more segments, and may be divided into a first filter portion, a second filter portion, and the like, and, regardless of the arrangement position, when one of the two or more segments corresponds to the filter for the smoking article according to one embodiment of the present invention, it may be included in the scope of the present invention.

In addition to the tobacco medium portion and the filter portion, the smoking article may further include wrapping paper wrapping the above structure, and the wrapping paper may be manufactured using a common filter roll paper. Further, in the tipping wrapper for combining the tobacco medium portion and the filter, one or more perforations may be selectively formed in the circumferential direction so that the outside air flows in or the inside air flows out, thereby having the effect of realizing the air dilution ratio of the cigarette and adjusting the transmission amount of the main stream smoke component.

The constitution of the present invention and its effects are described in further detail below by examples and comparative examples. However, the present embodiment is for more specifically describing the present invention, and the scope of the present invention is not limited to these embodiments.

Examples-examples

1) Method for manufacturing lyocell filter

Lyocell fibers having 1 fiber of about 3.0 denier were used, and lyocell tows having tow bundles of about 35000 denier were used. Also, a binder solution was prepared as a mixture of binder, TEC, and solvent. Specifically, the binder solution is prepared by adding 10 wt% of polyvinylpyrrolidone (Polyvinylpyrrolidone, PVP) to 60 wt% of a solvent (a mixed solvent of 40 wt% of propylene glycol, 10 wt% of alcohol, 10 wt% of water) and 30% of TEC, based on the total weight of the binder solution. The prepared binder solution was sprayed into the lyocell tows by brush spraying. 10 or 15 wt% of the binder solution is sprayed based on the weight of the lyocell filament bundles. The dried lyocell tow was wrapped with a paper wrapper to produce a tobacco filter having an axial length of about 108mm and a circumference of about 24.20 mm.

2) Viscosity difference according to kinds of adhesives

The inventors compared and showed the differences in viscosity at different temperatures of polyvinylpyrrolidone (PVP) of one of the ethylene (Vinyl) based adhesives, hydroxypropyl methylcellulose (Hydroxypropyl methylcellulose, HPMC) of one of the cellulose based adhesives, and Polyester (Polyester) according to one embodiment of the invention (table 1).

TABLE 1

HPMC as a cellulose-based binder and PVP as an ethylene-based binder both correspond to an amphoteric binder, and the binder can be mixed with a fat-soluble TEC, but as shown in table 1, HPMC is high in viscosity when dissolved as compared with PVP, and thus cannot be uniformly dispersed in a filter manufacturing process, and a tow adheres to an apparatus roll and is rolled up, as a result, a problem such as breakage of the tow is caused. In contrast, for PVP, the viscosity is lower than HPMC, so that no problem occurs in the filter manufacturing process, and there is an advantage in that TEC substances can be uniformly dispersed in lyocell tows.

On the other hand, polyesters have a low viscosity as PVP but cannot be uniformly mixed with TEC as a phenolic-related functional substance, and therefore have a limitation in that a surfactant or an emulsifier is required to be uniformly dispersed, and when the surfactant or the emulsifier is used (in the case of dispersing TEC in a polyester binder solution containing a surfactant or an emulsifier), there is a disadvantage in that the viscosity increases.

3) Preparation of polyester binder and polyvinylpyrrolidone (Polyvinylpyrrolidone, PVP) binder solution and confirmation of filter effect applied

The polyester binder was mixed with water, propylene Glycol (PG), ethanol (EtOH) to prepare a polyester binder solution, and the PVP binder was mixed with water, PG, etOH, and TEC to prepare a PVP binder solution. In the case of polyester, when TEC is mixed, layer separation occurs, so it is difficult to prepare a uniform binder solution, but in the case of PVP, as an amphoteric binder, it is easy to mix with TEC, so it is easy to prepare a binder solution.

Cigarettes were manufactured using the lyocell filters to which the two binder solutions were applied, and phenolic (Phenol) smoke components of the respective cigarettes were measured for comparison, and the results thereof are shown in table 2 below.

TABLE 2

As shown in table 2 above, when PVP binder solution was applied to the lyocell filter, it was confirmed that the phenolic component reducing effect was about 30% as compared with the case where polyester binder solution was applied to the lyocell filter.

As described above, although the embodiments are described with limited drawings, various technical modifications and variations can be applied by one of ordinary skill in the art based on the above. For example, techniques described may be performed in a different order than described, and/or constituent elements of systems, structures, devices, circuits, etc. described may be combined or combined in a different manner than described, or substituted or replaced by other constituent elements or equivalents may also achieve suitable results.

Accordingly, other implementations, other embodiments, and equivalents to the scope of the invention are also within the scope of the invention as set forth below.

Claims

1. A filter for a smoking article comprising a lyocell filament bundle comprising a plurality of lyocell fibers, characterized in that,

The filter for a smoking article comprises a binder solution containing a phenolic-related functional substance and a binder.

2. A filter for a smoking article according to claim 1, wherein,

The binder solution comprises 20 to 50 wt% of a phenolic-related functional material.

3. A filter for a smoking article according to claim 1, wherein,

The phenolic-related functional substance is one or more selected from the group consisting of triethyl citrate and glyceryl triacetate.

4. A filter for a smoking article according to claim 1, wherein,

The adhesive is one or more selected from the group consisting of hydrophilic adhesives and amphoteric adhesives.

5. A filter for a smoking article according to claim 1, wherein,

The adhesive is a hydrophilic adhesive selected from one or more of the group consisting of polyesters and starches,

The filter for a smoking article further comprises an emulsifier.

6. The filter for smoking articles of claim 5, wherein the filter comprises a filter body,

The emulsifier is one or more selected from the group consisting of monoglycerides, diglycerides, and triglycerides.

7. A filter for a smoking article according to claim 1, wherein,

The adhesive is an amphoteric adhesive selected from one or more of the group consisting of cellulose adhesives and vinyl adhesives,

The cellulose binder is one or more selected from the group consisting of hydroxypropyl methylcellulose, ethyl cellulose, methyl cellulose and carboxymethyl cellulose,

The vinyl adhesive is one or more selected from the group consisting of polyvinylpyrrolidone, polyvinyl alcohol, and ethylene-vinyl acetate.

8. A filter for a smoking article according to claim 1, wherein,

The adhesive is one or more vinyl adhesives selected from the group consisting of polyvinylpyrrolidone, polyvinyl alcohol, and ethylene-vinyl acetate.

9. A filter for a smoking article according to claim 1, wherein,

The binder is polyvinylpyrrolidone.

10. The filter for smoking articles of claim 4, wherein the filter comprises a filter body,

The filter for a smoking article further comprises alcohol.

11. The filter for smoking articles of claim 10, wherein the filter comprises a filter body,

The alcohol is propylene glycol.

12. A smoking article comprising a tobacco media portion and a filter portion, characterized in that,

The smoking article comprises a lyocell tow comprising the plurality of lyocell fibers, a phenolic-related functional material, an amphoteric binder, and alcohol,

The phenolic related functional substance is one or more selected from the group consisting of triethyl citrate and glyceryl triacetate,

The amphoteric adhesive is one or more selected from the group consisting of cellulose adhesives and vinyl adhesives.

13. The smoking article of claim 12, wherein the smoking article comprises a rod,

The amphoteric adhesive is one or more vinyl adhesives selected from the group consisting of polyvinylpyrrolidone, polyvinyl alcohol, and ethylene-vinyl acetate.

14. The smoking article of claim 12, wherein the smoking article comprises a rod,

The amphoteric binder is polyvinylpyrrolidone.

15. The smoking article of claim 12, wherein the smoking article comprises a rod,

The alcohol is propylene glycol.

16. A method for producing a filter for a tobacco, which is a method for producing a filter for a smoking article, characterized by comprising:

step a), preparing a lyocell filament bundle comprising a plurality of lyocell fiber bundles;

Step b), mixing the amphoteric adhesive and alcohol, and then mixing the phenolic related functional substances; and

Step c) dispersing the mixed solution in the lyocell filament bundles,

The amphoteric adhesive is one or more selected from the group consisting of cellulose adhesives and vinyl adhesives,

The alcohol is propylene glycol.