KR20230149942A - Filters with functional enhancing binders and smoking articles comprising thereof - Google Patents

Abstract

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

Description

Filters with functional enhancing binders and smoking articles comprising the same}

The present invention relates to a filter to which a binder to improve functionality is applied and a smoking article containing the same.

Lyocell's main ingredient is cellulose, and unlike cellulose acetate (CA), there are almost no plasticizers that are harmless to the human body. For this reason, filters are manufactured using lyocell, and a binder solution must be used to provide hardness above a certain level. When a Lyocell filter is mixed with a previously used binder solution and substances such as triethyl citrate (TEC) and triacetin (TA), layer separation of the solution occurs. When such a solution is used, a problem arises in that materials such as binder solution, TEC, and TA cannot be sprayed uniformly on the lyocell tow.

Accordingly, in order to overcome the problems and/or limitations of the existing technology as described above, the present invention includes Lyocell fiber, triethyl citrate (TEC) and/or triacetin (TA). The purpose is to provide a lyocell filter for smoking articles manufactured by homogeneously mixing a material such as and a binder, and a smoking article containing the same.

However, the problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

According to one embodiment of the present invention, in a filter for smoking articles including lyocell tow containing a plurality of lyocell fibers,

A filter for smoking articles is provided, characterized in that it contains a phenol-related functional material and a binder.

According to one side, in a smoking article including a tobacco medium portion and a filter portion,

Lyocell tow containing the plurality of lyocell fibers, a phenol-related functional material, an amphoteric binder, and alcohol,

The phenol-related functional material is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA),

The amphoteric binder provides a smoking article, characterized in that at least one selected from the group consisting of a cellulose-based binder and a vinyl-based binder.

According to another aspect, in a method of manufacturing a filter for a smoking article,

a) preparing a lyocell tow containing a plurality of lyocell fiber bundles;

b) mixing an amphoteric binder and alcohol and then mixing a phenol-related functional material; and

c) dispersing the mixed solution into the lyocell tow,

The phenol-related functional material 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 binder and a vinyl binder,

A method for manufacturing a filter for cigarettes is provided, wherein the alcohol is propylene glycol (PG).

According to one aspect of the present invention, it is possible to provide a lyocell filter in which fat-soluble substances such as triethyl citrate (TEC) and/or triacetin (TA) are more uniformly mixed, through which , it has the advantage of being able to more effectively remove components such as phenols present in cigarette smoke components during smoking. Additionally, an eco-friendly filter can be produced by using lyocell tow.

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

1 is a diagram showing the schematic configuration of a smoking article according to an embodiment of the present invention.
Figure 2 is a diagram showing a schematic configuration of a smoking article including a wrapper according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, various changes can be made to the embodiments, so the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes for the embodiments are included in the scope of rights.

The terms used in the examples are for descriptive purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

In addition, when describing with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiments, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the embodiments, the detailed descriptions are omitted.

Additionally, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term.

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description given in one embodiment may be applied to other embodiments, and detailed description will be omitted to the extent of overlap.

Throughout the specification, 'smoking articles' may refer to articles that can generate aerosols, such as cigarettes (cigarettes), cigars, etc. Smoking articles may include an aerosol-generating material or an aerosol-forming substrate. Additionally, smoking articles may include solid materials based on tobacco raw materials, such as leaf tobacco, cut tobacco, reconstituted tobacco, etc. Smoking materials may contain volatile compounds.

In addition, throughout the specification, 'upstream' or 'upstream direction' refers to the direction away from the mouth of the user smoking the smoking article (1), and 'downstream' or 'downstream direction' refers to the direction away from the user's mouth smoking the smoking article (1). It means the direction approaching from the corner of . For example, in the smoking article 1 shown in Figure 1, the tobacco material portion 10 is located upstream or in an upstream direction of the filter portion 20 for cigarettes.

Furthermore, in this specification, the smoking article 1 is described as an example of a combustion-type cigarette, but the smoking article 1 is not limited to this, and the smoking article 1 is a heating type used with an aerosol generating device (not shown) such as an electronic cigarette device. This may apply to cigarettes, etc.

According to one embodiment of the present invention, in a filter for smoking articles including lyocell tow containing a plurality of lyocell fibers,

A filter for smoking articles is provided, characterized in that it contains a binder solution containing a phenol-related functional material and a binder.

Phenol-related functional substances correspond to substances that can specifically reduce phenols generated during smoking. For example, they may be triethyl citrate (TEC) or triacetin (TA). , may apply to all of these.

When TEC or TA is included in the binder solution, the content may be 20 to 50% by weight. If it is less than 20% by weight, the phenol reduction effect is weakened, and if it exceeds 50% by weight, the content of the binder solution is reduced. Adhesion may be very low, making it difficult to achieve appropriate filter hardness.

The binder included in the filter for smoking articles may be of different types depending on how the filter is manufactured, and may correspond to a hydrophilic binder and/or an amphoteric binder that has both water-soluble and oil-soluble properties.

When the filter for smoking articles includes a hydrophilic binder, when manufacturing the filter for smoking articles, the oil-soluble phenol-related functional materials such as TEC and TA cannot be easily mixed with the hydrophilic binder, causing the layers of the solution to separate. This happens. Therefore, in this case, it is preferable to additionally add an emulsifier when manufacturing the filter, and the filter for smoking articles produced accordingly further contains an emulsifier.

The type of emulsifier is preferably an emulsifier for food for reasons such as smoker's health and environmental friendliness, and specific examples include monoglyceride, diglyceride, and/or triglyceride. It may apply to

When the filter for smoking articles includes an amphoteric binder, the eco-friendly water-soluble solution used to manufacture the lyocell filter and the oil-soluble functional materials related to phenols such as TEC and TA can be homogeneously mixed, through which , Phenol-related functional substances are uniformly dispersed in lyocell tow, enabling effective reduction of components such as phenol present in cigarette smoke components during smoking.

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

Meanwhile, among the types of amphoteric binders, it may be more preferable to include a vinyl-based binder, and even more preferably, it may be polyvinylpyrrolidone (PVP).

When polyvinylpyrrolidone (PVP) is used as an amphoteric binder, compared to other amphoteric binders, the viscosity is lower when mixed with oil-soluble phenol-related functional materials, so the oil-soluble phenol-related functional materials are more uniformly distributed. They can be mixed, and furthermore, when manufacturing filters for smoking articles, there is an effect that a filter in which phenol-related functional materials are uniformly dispersed in lyocell tow can be easily manufactured.

In addition, in addition to the binder and phenol-related functional materials, alcohol may be further included and mixed to prevent the growth of microorganisms and fungi in the binder solution, and types of alcohol include polyhydric alcohol and monohydric alcohol such as ethyl alcohol. , or a mixture thereof, and preferably includes propylene glycol (PG) among the polyhydric alcohols.

On the other hand, when using propylene glycol (PG), propylene glycol (PG) acts as a release agent, reducing the phenomenon of lyocell tow adhering to the filter equipment roll and the roll, thereby increasing the efficiency of the filter manufacturing process. do.

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

In addition, the filter for smoking articles may additionally include a capsule containing fragrance therein, or may additionally contain a moisturizer, etc., depending on the intended use (combustible cigarette, electronic cigarette, etc.) and necessity during manufacture.

When these flavor-bearing capsules are included, it can provide a variety of flavor experiences and a masking effect of unpleasant odors, thereby improving the smoker's sense of satisfaction, and by including the above-mentioned moisturizer, the amount of atomization can be more effectively increased compared to existing smoking products. there is.

According to another aspect of the present invention, in a smoking article including a tobacco medium portion and a filter portion,

Lyocell tow containing the plurality of lyocell fibers, a phenol-related functional material, an amphoteric binder, and alcohol,

The phenol-related functional material is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA),

The amphoteric binder provides a smoking article, characterized in that at least one selected from the group consisting of a cellulose-based binder and a vinyl-based binder.

The amphoteric binders and alcohols described herein are substantially the same as the types of amphoteric binders included in the filters for smoking articles described above, and are preferably amphoteric binders of polyvinylpyrrolidone (PVP) and propylene glycol ( It may contain PG) alcohol.

Meanwhile, the tobacco medium unit typically contains a tobacco material containing nicotine, such as leaf tobacco, and may additionally include excipients such as binders or other additives. As an example, the tobacco medium included in the tobacco medium unit of the present invention It can be manufactured in the form of granules containing tobacco substances and excipients.

In the present invention, the tobacco material is a material that forms an aerosol-generating substrate, and may be tobacco leaf pieces, tobacco stems, tobacco dust generated during tobacco processing, and/or leaf strips of tobacco leaves. The tobacco leaves may be at least one selected from yellow leaves, burley leaves, orient leaves, cigar leaves, and toast, but are not limited thereto.

In addition, the filter part of the smoking article according to an embodiment of the present invention may be divided into two or more segments, and may be divided into a first filter part, a second filter part, etc., and regardless of the position where it is placed, one of the two or more segments If it corresponds to a filter for smoking articles according to an embodiment of the present invention, it may be included in the scope of the present invention.

In addition, the smoking article may include a wrapper surrounding the component parts in addition to the tobacco media portion and the filter portion, and the wrapper may be made of general filter paper. In addition, the tipping wrapper that combines the tobacco medium unit and the filter may optionally have one or more perforations formed along the circumferential direction to allow external air to flow in or internal gas to flow out, through which the air dilution rate of the cigarette can be adjusted. It has the effect of being able to implement and control the amount of migration of mainstream smoke components.

Hereinafter, the configuration of the present invention and its effects will be described in more detail through examples and comparative examples. However, these examples are for illustrating the present invention in more detail, and the scope of the present invention is not limited to these examples.

- Examples

1) Manufacturing method of Lyocell filter

Lyocell fiber with a single fiber strand of approximately 3.0 denier was used, and Lyocell tow with a tow fiber bundle of approximately 35,000 denier was used. Additionally, a binder solution, which is a mixture of binder, TEC, and solvent, was prepared. Specifically, the binder solution contains 10% by weight of PVP (Polyvinylpyrrolidone) and 60% by weight of a solvent (mixed solvent of 40% by weight of propylene glycol, 10% by weight of ethanol, and 10% by weight of water) based on the total weight of the binder solution. and was prepared by adding 30% TEC. The prepared binder solution was sprayed on the lyocell tow using a brush spray method. The binder solution was prepared by spraying 10 or 15% by weight based on the weight of lyocell tow. The dried lyocell tow was wrapped with wrapping paper to produce a cigarette filter with an axial length of approximately 108 mm and a circumference of approximately 24.20 mm.

2) Viscosity differences depending on the type of binder

The present inventor has used polyvinylpyrrolidone (PVP), one of the vinyl-based binders, hydroxypropyl methylcellulose (HPMC), one of the cellulose-based binders, and polyester ( The differences in viscosity of polyester by temperature are compared and shown (Table 1).

bookbinder density(%) Viscosity (cP) 25℃ 40℃ HPMC 10 400 180 PVP 10 30 below 10 Polyester 10 below 10 5 or less

HPMC, a cellulose-based binder, and PVP, a vinyl-based binder, are both amphoteric binders, and all of the above binders can be mixed with fat-soluble TEC. However, as shown in Table 1 above, HPMC is more stable than PVP when dissolved. Due to its high viscosity, it is not uniformly dispersed during the filter manufacturing process, and the tow adheres to the machine roll and dries, resulting in problems such as the tow breaking. On the other hand, PVP has the advantage that it has a lower viscosity compared to HPMC, so problems do not occur in the filter manufacturing process, and the TEC material can be uniformly dispersed in the lyocell tow.

On the other hand, polyester has a low viscosity like PVP, but it cannot be mixed uniformly with TEC, a functional material related to phenols, so there is a limitation that it must be uniformly dispersed using a surfactant or emulsifier. When using (dispersing TEC in a polyester binder solution containing a surfactant or emulsifier), there is a disadvantage in that viscosity increases.

3) Preparation and application of polyester binder and polyvinylpyrrolidone (PVP) binder solution and confirmation of filter effect

A polyester binder solution was prepared by mixing a polyester binder with water, propylene glycol (PG), and ethyl alcohol (EtOH), and a PVP binder solution was prepared by mixing a PVP binder with water, PG, EtOH, and TEC. In the case of polyester, layer separation occurs when mixing TEC together, making it difficult to prepare a uniform binder solution. However, in the case of PVP, as an amphoteric binder, it mixes well with TEC, making it easy to prepare a binder solution.

Cigarettes were manufactured using Lyocell filters to which the above 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.

filter Phenol (㎍/cig) Lyocell filter
(Polyester binder solution) 4.6 Lyocell filter
(PVP binder solution) 3.1

As shown in Table 2 above, compared to the case where the polyester binder solution was applied to the Lyocell filter, when the PVP binder solution was applied to the Lyocell filter, it can be seen that the effect of reducing phenol content was about 30% greater.

Although the embodiments have been described with limited drawings as described above, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent.

Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the following claims.

1: Smoking items
10: Cigarette beating unit
20: filter part
100: Smoking articles
110: Filter for smoking articles
110a: filter wrapper
120: Cigarette beating unit
120a: Tobacco whipper wrapper
130: Tipping wrapper

Claims (16)

In the filter for smoking articles including lyocell tow containing a plurality of lyocell fibers,
A filter for a smoking article, comprising a binder solution containing a phenol-related functional material and a binder.
According to paragraph 1,
A filter for smoking articles, wherein the binder solution contains 20 to 50% by weight of a phenol-related functional material.
According to paragraph 1,
A filter for smoking articles, wherein the phenol-related functional material is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA).
According to paragraph 1,
A filter for smoking articles, characterized in that the binder is at least one selected from the group consisting of a hydrophilic binder and an amphoteric binder.
According to paragraph 1,
The binder is a hydrophilic binder that is at least one selected from the group consisting of polyester and starch-based binders,
A filter for a smoking article, characterized in that the filter for a smoking article further comprises an emulsifier.
According to clause 5,
A filter for smoking articles, wherein the emulsifier is at least one selected from the group consisting of monoglyceride, diglyceride, and triglyceride.
According to paragraph 1,
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),
A filter for smoking articles, wherein the vinyl binder is at least one selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and ethylene vinyl acetate (EVAc).
According to paragraph 1,
A filter for smoking articles, wherein the binder is one or more vinyl binders selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and ethylene vinyl acetate (EVAc).
According to paragraph 1,
A filter for smoking articles, characterized in that the binder is polyvinylpyrrolidone (PVP).
According to paragraph 4,
A filter for a smoking article, characterized in that the filter for a smoking article further contains alcohol.
According to clause 10,
A filter for smoking articles, characterized in that the alcohol is propylene glycol (PG).
In a smoking article including a tobacco medium portion and a filter portion,
Lyocell tow containing the plurality of lyocell fibers, a phenol-related functional material, an amphoteric binder, and alcohol,
The phenol-related functional material is at least one selected from the group consisting of triethyl citrate (TEC) and triacetin (TA),
A smoking article, characterized in that the amphoteric binder is at least one selected from the group consisting of a cellulose-based binder and a vinyl-based binder.
According to clause 12,
Smoking article, characterized in that the amphoteric binder is at least one vinyl-based binder selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and ethylene vinyl acetate (EVAc).
According to clause 12,
Smoking article, characterized in that the amphoteric binder is polyvinylpyrrolidone (PVP).
According to clause 12,
Smoking article, characterized in that the alcohol is propylene glycol (PG).
In the method of manufacturing a filter for smoking articles,
a) preparing a lyocell tow containing a plurality of lyocell fiber bundles;
b) mixing an amphoteric binder and alcohol and then mixing a phenol-related functional material; and
c) dispersing the mixed solution into the lyocell tow,
The phenol-related functional material 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 binder and a vinyl binder,
A method of manufacturing a filter for cigarettes, characterized in that the alcohol is propylene glycol (PG).