KR20240014853A - Filter for smoking articles, and smoking articles including the same - Google Patents

Abstract

The present invention provides a filter for a smoking article including two or more filter sections, and at least one of the two or more filter sections including 2 to 4 holes, and a smoking article including the same.

Description

Filter for smoking articles and smoking articles including the same {Filter for smoking articles, and smoking articles including the same}

The present invention relates to a filter for smoking articles and a smoking article containing the same.

In general, tobacco refers to a perennial plant of the dicotyledonous plant family Solanaceae, but recently, it is also commonly referred to as a product manufactured for smoking purposes by wrapping tobacco leaves in cigarette paper and forming a filter section on one side. There are thousands of types of such cigarettes worldwide, and they are released in various shapes and forms.

A filter is located at the proximal end (ME) of the cigarette and serves to filter smoke components by removing particles and vapor phase of the cigarette smoke.

However, since the filter paper surrounding the filter is paper, there is a problem that cigarette smoke passes through the filter during smoking, causing the cigarette smell to permeate the area where the smoker's fingers directly contact, and staining the cross-section of the filter when smoking.

Accordingly, in order to overcome the problems and/or limitations of the existing technology as described above, the present invention provides a smoking article comprising two or more filter parts and 2 to 4 holes in at least one filter part of the two or more filter parts. The purpose is to provide a filter for use, 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, a filter for a smoking article is provided, including two or more filter parts, and at least one filter part of the two or more filter parts including 2 to 4 holes.

According to one side, a smoking article including a filter for the smoking article is provided.

Using the present invention, it is possible to provide higher suction resistance than conventional general tube filters and increase the removal rate of smoke components in smoke. In addition, by directing the mainstream smoke and air flowing in through the perforated area into multiple holes, it is possible to reduce the smell of cigarettes from being absorbed into the hands when smoking. In addition, it reduces stains that appear on the filter cross-section when smoking, making the filter cross-section look clean even after smoking, giving smokers a sense of satisfaction.

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.

Figure 1 is a diagram showing a smoking article 100 according to an embodiment of the present invention.
Figure 2 is a schematic and cross-sectional view showing a filter 10 for a smoking article including two filter parts, and one of the two filter parts including three holes.
Figure 3 is a cross-sectional view of the filter unit 11 including the three holes.
Figure 4 is a manufacturing image of the filter 10.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, since various changes can be made to the embodiments, 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 clearly 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 contain aerosol-generating substances or aerosol-forming substrates. Additionally, smoking articles may include solid substances based on tobacco raw materials, such as leaf tobacco, cut tobacco, and reconstituted tobacco. 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, and 'downstream' or 'downstream direction' refers to the direction closer to the mouth of the user smoking the smoking article. means.

Meanwhile, expressions such as “A or B” or “at least one of A or B” may include any one of the items listed together, or all possible combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1 , the smoking article 100 includes a filter 10 and a tobacco media unit 20 as an example. When the tobacco medium is burned, cigarette smoke is generated, and the generated cigarette smoke passes through the filter and enters the smoker's lungs.

According to one embodiment of the present invention, it may include two or more filter units, and specifically, it may include 2 to 4 filter units, or 2 to 3 filter units. In addition, a filter for a smoking article is provided, wherein at least one filter part of the two or more filter parts includes 2 to 4 holes, preferably 3 holes.

For example, as shown in FIG. 2 , the filter 10 may include a first filter unit 11 and a second filter unit 13. The first filter unit 11 and the second filter unit 13 may be located at the proximal end and the distal end (Tobacco End (TE)), respectively. The first filter unit 11 may include multiple holes. Figure 4 is an image of the production of such a filter.

Specifically, the total length 15 of the filter may be 25 to 30 mm, preferably 27 mm. The total length of the first filter unit 11 may be 5 to 12 mm, and preferably 9 mm. The total length of the second filter unit 13 may be 15 to 22 mm, and preferably 18 mm.

Referring to FIG. 3, in the filter for smoking articles according to an embodiment of the present invention, the hole diameter 17 of the cross section of the filter part 11 including multiple holes is 1 mm or more and 2 mm or less, preferably 1.6 mm. It may be more than mm and less than or equal to 1.7 mm.

If the hole diameter is less than 1 mm, problems arise when manufacturing the filter. Specifically, when manufacturing a filter, a rod is inserted under high temperature and pressure conditions to create a hole in the filter. At this time, if the thickness of the rod becomes thinner than 1 mm, it is difficult to create holes of uniform diameter during filter molding.

In the filter for smoking articles according to an embodiment of the present invention, the outer wall thickness 19 of the filter may be 0.7 mm or more and 1.3 mm or less, preferably 1.05 mm or more and 1.15 mm or less, and the outer wall thickness is the thickness of the filter. It is based on the shortest distance from the outer wall to the hall. Also, considering the desirable size of the hole (ex. 1.0 mm), the centers of the holes may be formed at a distance of 1.5 mm or more from the outer wall of the filter.

This is because the manufactured filter must be cut when manufacturing a cigarette, and if the outer wall thickness 19 of the filter is thin, the wall may break.

Meanwhile, the second filter unit 13 may be a filter containing at least one of cellulose acetate, carbon, or paper, or a combination thereof. Preferably, when the first filter unit includes multiple holes, it may be a cellulose filter or a polymer molded filter. However, it is not limited to this.

The filter is surrounded by filter paper. Tip paper is the paper that connects the cigarette and the filter, and has perforations. Perforation plays the role of diluting the smoke component of the product by increasing the dilution rate of the cigarette. The perforation may be formed 10.5 to 11 mm from the proximal end. Accordingly, perforations may be located in the second filter unit 13, and the filter wrapper of the second filter unit 13 may be porous.

The circumference of the filter 10 for smoking articles according to an embodiment of the present invention may be 15 mm or more and 25 mm or less, preferably 16.7 mm or more and 24.2 mm or less. For example, the circumference of the filter may be 24.2 mm for a regular cigarette, 21.7 mm for a slim cigarette, and 16.7 mm for an ultra-slim cigarette.

The filter 10 for smoking articles according to an embodiment of the present invention may have a suction resistance of 50 mmH ₂ O/Tip or more and 150 mmH ₂ O/Tip or less. If the suction resistance is less than 50 mmH ₂ O/Tip, the filtering effect may be excessively reduced, and if it is greater than 150 mmH ₂ O/Tip, the suction resistance may be reduced, making it difficult for the user to inhale the aerosol.

The filter may contain flavoring agents. Flavoring agents include mint, chocolate, cocoa, coffee, licorice, coriander, vanillin, ethyl vanillin, maltol, ethyl maltol, eucalyptol, acetic acid, breath freshener scent, bergamot oil, rosemary, and geranium oil. , lemon oil, orange oil, lime oil, grapefruit oil, mint oil, ginger oil, isosweetener, and fruit flavor ingredients, and is not limited to the types listed above.

Meanwhile, the smoking article 100 according to an embodiment of the present invention may include the filter 10. The generated cigarette smoke passes through a filter to filter out the smoke components, and the filter portion located at the distal end usually has a high ability to remove smoke components.

The smoking article 100 may be a combustible cigarette or a heated (non-combustible) cigarette, but is not limited thereto.

The smoking article may include a tobacco medium and a wrapper.

The tobacco medium unit typically contains a tobacco material containing nicotine, such as leaf tobacco, and may additionally include excipients such as binders, other additives, and the above-mentioned flavoring agents. As an example, the tobacco medium unit of the present invention The tobacco medium included may be manufactured in the form of granules containing tobacco material and excipients, etc.

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.

Hereinafter, the present invention will be described in more detail through examples, but the present invention is not limited to the following examples.

filter design

Example 1

A filter for a smoking article including a first filter portion and a second filter portion was manufactured. The length of the first filter part is 15 mm, three holes are formed, and it includes acetate tow. The length of the second filter part is 12 mm and contains carbon.

Example 2

A filter for smoking articles was manufactured in the same manner as Example 1, except that the length of the first filter part was 9 mm and the length of the second filter part was 18 mm.

Comparative Example 1

A filter for smoking articles was manufactured in the same manner as Example 1, except that no hole was formed in the first filter portion.

Comparative Example 2

A filter for smoking articles was manufactured in the same manner as Example 1, except that one hole was formed in the first filter portion.

Comparative Example 3

A filter for smoking articles was manufactured in the same manner as in Example 1, except that one hole was formed in the first filter part and the length was 9 mm, and the length of the second filter part was 18 mm.

The filter design details of Comparative Examples 1 to 3 and Examples 1 and 2 are shown in Table 1 below.

division filter segment Classification of raw material use absorption
resistance
(mmH ₂ O) filter length
(mm) Suction resistance
(mmH ₂ O/Tip) tow
(De) filter paper
(CU) plasticizer
(%) TE part activated carbon M.E. T.E. M.E. T.E. M.E. T.E. M.E. T.E. Finished M.E. T.E. type input
(mg) type Porosity type Porosity type Porosity Comparative Example 1 15
(120) 12
(96) 53.75 61.25 3.0/35K 2.5/45K porous 24K common - porous 35K 7±2 6±2 Oxidation 24 460 Comparative example 2 15
(120) 12
(96) - 70 enemy 2.7/35K porous 35K common - porous 35K enemy 6±2 Oxidation 24 enemy Comparative Example 3 9
(72) 18
(108) - 108 enemy 2.7/35K common - porous 24K porous 35K Example 1 15
(120) 12
(96) - 70 enemy 2.7/35K porous 35K common - porous 35K Example 2 9
(72) 18
(108) - 108 enemy 2.7/35K common - porous 24K porous 35K

In the table above, ME refers to the first filter unit located at the proximal end, and TE refers to the second filter unit located at the distal end.

Compared to the suction resistance of Comparative Example 1, the suction resistance of Example 1 increases by 8.75 mmH ₂ O/Tip, and the suction resistance of Example 2 increases by 47.75 mmH ₂ O/Tip. That is, the suction resistance of Example 2 has a higher value than that of Example 1, which means that the suction is greater when the first and second filter units are 9+18 mm than when the first and second filter units are 15+12 mm. This means that resistance increases. Unlike Example 1, in Example 2, the length of the first filter part is 9 mm, and the perforation is usually located at 10.5 to 11 mm from the proximal end, so the perforation is located in the second filter part. Therefore, in the case of Example 2, it is expected that the suction resistance increases as the air flowing in from the perforation passes through the second filter unit and then the first filter unit.

Physical properties of filters

The physical properties of the filters of Comparative Examples 1 to 3 and Examples 1 and 2 were measured and shown in Table 2 below.

division System
(ME+TE) Round Suction resistance roundness Hardness mm mmH ₂ O % % Comparative Example 1 15+12 24.21 463.2 95.5 93.6 Comparative example 2 15+12 24.16 326.8 90.6 95.7 Comparative Example 3 9+18 24.22 462.9 95.2 92.5 Example 1 15+12 24.19 308.3 91.8 94.6 Example 2 9+18 24.26 437.8 94.4 94.3

Smoking product prototype design

The design details of smoking articles to which Comparative Examples 1 to 3 and Examples 1 and 2 were applied are shown in Table 3 below.

division product physical properties Selection conditions note
(tip paper) wt UPD
(unencapsulated pressure drop) E.P.D.
(encapsulated pressure drop) VR Round gross weight E.P.D. VR gross weight ingredient corner candle mg mg mg mmWG mmWG % mm ±10mg ±5mmWG ±2% Comparative Example 1 906 294 611 63 153 79 24.7 866 82 1700 Comparative example 2 979 365 613 26 123 86 24.6 957 82 3500 Comparative Example 3 922 347 576 47 144 85 24.5 938 82 2500 Example 1 945 366 579 22 111 85 24.4 957 82 3500 Example 2 924 347 577 41 132 85 24.5 938 82 2500

Experimental Example 1: Analysis of components of mainstream smoke in smoking articles

The results of analyzing the components of mainstream smoke in smoking articles using Comparative Examples 1 to 3 and Examples 1 and 2 are shown in Table 4 below.

division TPM tar nicotine Puff No. moisture division System
(ME+TE) mg/cig mg/cig mg/cig episode mg/cig Comparative Example 1 15+12 2.07 1.56 0.17 8.87 0.28 Comparative example 2 15+12 1.87 1.38 0.15 8.80 0.32 Comparative Example 3 9+18 1.56 1.20 0.15 8.44 0.22 Example 1 15+12 1.99 1.60 0.17 8.72 0.22 Example 2 9+18 1.48 1.18 0.14 9.06 0.18

In Example 2, compared to Comparative Example 1, the TPM value was reduced by 0.59 mg/cig, the tar value was reduced by 0.38 mg/cig, and the nicotine value was reduced by 0.03 mg/cig.

When the first and second filter units were 9+18 mm, TPM, tar, and nicotine transfer amount were significantly reduced compared to the 15+12 mm system. In particular, in the case of tar and nicotine, when the first and second filter parts were 9 + 18 mm, a significant decrease of 23.1 ~ 24.4% and 11.8 ~ 17.6%, respectively, compared to Comparative Example 1 was shown. This is because the suction resistance of the 9+18 mm system is higher than that of the 15+12 mm system, and the smoke component removal ability of the second filter unit, which is usually located at the distal end, is greater.

Experimental Example 2: Sensory evaluation of the effect of reducing hand odor by applying a filter

To determine the effect of reducing hand odor by applying the filter of the present invention, cotton gloves were used on the fingers when smoking, and a sensory evaluation was conducted to determine the intensity of the cigarette odor felt 1 hour after completion of smoking. The cotton gloves were sealed immediately after smoking and stored in a sample bag. The intensity of the smell was compared to regular cloth.

Sensory evaluation was conducted on 15 evaluation panel members using smoking articles to which the filters of Comparative Example 1 and Example 2 were applied, and a total score of 9 was used as the standard.

The sensory evaluation results are shown in Tables 5 and 6 below. Table 5 is the paired sample statistics and Table 6 is the paired sample test results.

division N Off-flavor intensity average standardized deviation standard error mean Comparative Example 1 15 5.033 2.3939 .6181 Example 2 15 2.600 1.6605 .4287

response car t degree of freedom Probability of significance (two-tailed) average standardized deviation standard error mean 95% confidence interval of difference lower limit maximum Off-flavor strength 2.4333 3.2286 .8336 .6454 4.2213 2.919 14 .011

As a result of analyzing the sensory characteristics after completion of smoking, the smoking article to which Example 2 was applied showed a significant decrease in off-flavor intensity by 48.3% compared to the smoking article to which Comparative Example 1 was applied. When air enters through the perforation, mainstream smoke is usually concentrated in the center of the filter, and in the case of the smoking article to which Example 2 is applied, it can be seen that hand odor can be reduced by allowing mainstream smoke to escape through three holes.

Therefore, according to Experimental Examples 1 and 2, when applying the multi-hole and 9+18 mm system to smoking articles as in Example 2, it is expected that hand odor can be reduced while reducing smoke components such as tar and nicotine. can do.

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 to the claims also fall within the scope of the claims described below.

100: Smoking articles
10: filter
11: first filter unit
13: second filter unit
15: Total filter length
17: Hole diameter
19: Wall thickness of filter
20: Cigarette beating unit
30: perforation

Claims (13)

A filter for a smoking article, comprising two or more filter parts, and including 2 to 4 holes in at least one filter part of the two or more filter parts.
According to paragraph 1,
A filter for smoking articles, wherein the one filter portion includes three holes.
According to paragraph 1,
A filter for smoking articles, wherein the size of the hole is 1 mm or more and 2 mm or less in diameter.
According to paragraph 1,
A filter for smoking articles, wherein the shortest distance from the outer wall of the filter to the hole is 0.7 mm or more and 1.3 mm or less.
According to paragraph 1,
The filter is a filter for smoking articles having a total length of 25 to 30 mm.
According to paragraph 1,
The filter unit includes a first filter unit located at the proximal end and a second filter unit located at the distal end,
A filter for smoking articles, wherein the first filter unit includes multiple holes.
According to clause 6,
The length of the first filter part is 5 to 12 mm,
A filter for smoking articles, wherein the second filter portion has a length of 15 to 22 mm.
According to clause 6,
A filter for smoking articles, wherein the first filter unit is a cellulose filter or a polymer molded filter.
According to clause 6,
A perforation is located in the second filter part,
A filter for smoking articles in which the filter paper of the second filter part is porous.
According to paragraph 1,
A filter for smoking articles, wherein the circumference of the filter is 15 mm or more and 25 mm or less.
According to paragraph 1,
The filter unit is a filter for smoking articles having a suction resistance of 50 mmH ₂ O/Tip or more and 150 mmH ₂ O/Tip or less.
A smoking article comprising the filter for a smoking article according to any one of claims 1 to 11.
According to clause 12,
The smoking article is a combustion cigarette or a heated cigarette.

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