KR20230168303A - Smoking article filter containing pure cotton non-woven fabric, and smoking article including the same - Google Patents

Abstract

The present invention relates to a filter for smoking articles, including a cigarette filter containing a pure cotton non-woven fabric, wherein the pure cotton non-woven fabric is manufactured in a single layer method, and a smoking article including the same, wherein the smoking article includes a pure cotton non-woven fabric. Due to the fine fibers of the non-woven fabric itself, it has excellent smoke removal ability and is characterized by being biodegradable.

Description

Smoking article filter containing pure cotton non-woven fabric, and smoking article including the same}

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

The materials used as cigarette filters are cellulose acetate fiber or paper. In the case of paper, there is a problem of odor occurring, so cellulose acetate fiber is mainly used.

Cellulose acetate is an acetic acid esterification of cellulose, and the development of alternative materials has recently been required in accordance with the movement to regulate microplastics. In addition, even if a cigarette filter made of cellulose acetate fibers is buried in the soil, it still maintains its original form for 1 to 2 years, and it takes quite a long time for the cigarette filter buried in the soil to be completely biodegraded.

Accordingly, the need for materials that can decompose quickly enough and fulfill the function of a filter while providing satisfaction to consumers is increasing.

Accordingly, various methods for manufacturing biodegradable filter tow have been proposed, which include cellulose acetate made of other biodegradable polymers, additives to increase the decomposition rate of cellulose acetate, and low degree of substitution (to increase biodegradability). It has been proposed to use cellulose acetate with DS) and a composite of biodegradable polymers such as poly-hydroxybutyrate (PHB)/polyvinyl butyral (PVB) and starch as filter tow raw materials.

Korean Patent No. 1455002

For this reason, the present invention focuses on a pure cotton material that has excellent biodegradability and functions as a filter due to the development of fine fibers, and provides a filter for smoking articles containing pure cotton nonwoven fabric and a smoking article including the same.

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 those skilled in the art from the description below.

The present invention includes a cigarette filter comprising a pure cotton non-woven fabric,

The pure cotton nonwoven fabric provides a filter for smoking articles manufactured in a single layer method.

In one embodiment of the present invention, the filter for smoking articles may be any one of a recess filter, a dual filter, and a triple filter.

In another embodiment of the present invention, the filter for smoking articles may further include any one of cellulose acetate, lyocell, and paper material.

In another embodiment of the present invention, the cigarette filter may have an average suction resistance of 50 to 150 mmH ₂ O at a length of 20 to 30 mm, and a suction resistance deviation of 15 mmH ₂ O or less.

In another embodiment of the present invention, the pH adjustment medium may include volatile nicotine.

In another embodiment of the present invention, the cigarette filter may have a hardness of 80% or more.

In another embodiment of the present invention, the cigarette filter may have an average weight of 50 to 150 mg at a length of 20 to 30 mm and a weight deviation of 3 mg or less.

In another embodiment of the present invention, the filter for smoking articles,

The removal capacity of total particulate matter is more than 60%,

Tar removal ability is over 55%,

Nicotine removal ability is more than 45%,

The moisture removal capacity may be 78% or more.

The present invention also provides a smoking article comprising a filter for a smoking article according to the present invention.

In another embodiment of the present invention, the smoking article may be a combustion-type smoking article.

The present invention provides a filter for smoking articles using pure cotton non-woven fabric, and the pure cotton non-woven fabric component has the advantage of excellent biodegradability. In addition, the filter is manufactured by fibrillating the pure cotton nonwoven fabric through crimping, and the fine fibers are developed, resulting in significantly excellent smoke removal performance.

In addition, the pure cotton nonwoven fabric of the present invention is manufactured in a single layer method, so there is less variation in physical properties compared to nonwoven fabrics manufactured in the conventional crossweb method, so a filter with uniform quality can be manufactured, and workability is also excellent. There is.

The effects of the present invention are not limited to the effects described above, but 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 shows a filter for a smoking article according to an exemplary embodiment of the present invention.
Figure 2a schematically shows the single-layer method of manufacturing pure cotton nonwoven fabric.
Figure 2b schematically shows the crossweb method of manufacturing pure cotton nonwoven fabric.
3 shows a filter for a smoking article according to another exemplary embodiment of the present invention.
Figure 4 shows a smoking article according to an exemplary 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.

Throughout the specification, when a member is said to be located “on” another member, this includes not only cases where a member is in contact with another member, but also cases where another member exists between the two members.

Throughout the specification, when a part “includes” a certain component, this does not mean excluding other components, but rather means that it can further include other components.

Throughout the specification, the term "smoking article" means any product that can be smoked, whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes; It may refer to any product that can provide a smoking experience.

In addition, throughout the specification, ‘medium portion’ refers to the part or area that contains the smokable material. In other words, it can mean a part that contains a substance that can generate aerosol and can deliver nicotine to the user.

Throughout the specification, the terms "upstream" and "downstream" mean that when a user uses a smoking article to inhale outside air, "upstream" refers to the portion where air enters from the outside to the inside of the smoking article, and from the inside to the outside of the smoking article. The part where the air exits is “downstream.” The terms “upstream” and “downstream” may be used to indicate relative positions or directions between parts or segments that make up a smoking article.

Throughout the specification, “suction resistance” refers to the static pressure difference between the two ends of the sample when traversed by airflow under steady conditions where the volumetric flow is 17.5 mm per second at the discharge end. It refers to . The suction resistance can be measured using the method specified in ISO standard 6565:2002. Preferably, the suction resistance of the present invention may be the suction resistance measured for a filter having a length of 20 to 30 mm and a circumference of 20 to 25 mm. The above suction resistance range refers to the range of values measured for “a filter with a length of 20 to 30 mm,” and the filter of the present invention should not be limited to having a length of 20 to 30 mm. The filter of the present invention may have a length outside the above range, for example, 5 to 50 mm.

Throughout the specification, "hardness" refers to the resistance to compression transverse to the longitudinal axis, where the hardness of a filter is determined by applying a load across the article at the position of the filter, transverse to the longitudinal axis of the smoking article. and can be determined by measuring the average (average) depressed diameter of the article. Hardness is given by the formula:

[Equation 1]

DS is the original (non-collapsed) diameter, and Dd is the collapsed diameter after applying a set load for a set time. The harder the material, the closer its hardness is to 100%. The hardness can be specified using a density meter (DD60A), etc., the set time can be 20 seconds, and the set load can be 2 kg.

Throughout the specification, "deviation" is a numerical value representing the difference between the average of data values or variables. A large deviation may mean that the uniformity of quality is reduced, and a small deviation may mean that the uniformity of quality is increased. It can mean.

Hereinafter, the present invention includes a cigarette filter 100 containing a pure cotton non-woven fabric,

The filter 1000 for smoking articles, in which the pure cotton nonwoven fabric is manufactured in a single layer method, will be described in detail with reference to examples and drawings. However, the present invention is not limited to these examples and drawings.

As shown in Figure 1a, the present invention corresponds to a filter 1000 for smoking articles, including a cigarette filter 100 containing pure cotton nonwoven fabric.

As an example, the diameter of the cigarette filter may be 4 mm to 10 mm, and the circumference may be 15 mm to 30 mm. Additionally, the length may be 5 mm to 50 mm, but is not limited thereto.

According to one embodiment of the present invention, the pure cotton nonwoven fabric may be manufactured in a single layer method. As shown in Figure 2a, single-layer pure cotton nonwoven fabric is manufactured by stacking several sheets of pure cotton nonwoven fabric that have passed through a carding machine and spread thinly in the longitudinal direction in the longitudinal direction in the same direction (D _c ) as they passed through the carding machine. . That is, the longitudinal directions (D _l ) of the laminated nonwoven fabrics are laminated so that they are substantially parallel to each other.

When the pure cotton nonwoven fabric is manufactured into a filter by crimping, fine fibers are developed through fibrillation, so it can have excellent smoke performance.

Pure cotton nonwoven fabrics used in conventional cigarette filters have been mainly manufactured using the crossweb method as shown in Figure 2b. Pure cotton nonwoven fabric manufactured by the crossweb method may be laminated diagonally with respect to the longitudinal direction.

The pure cotton nonwoven fabric of the present invention is manufactured in a single layer method that can be laminated as described above, and has the characteristics of excellent hardness, light weight, and high breathability compared to the conventional crossweb type pure cotton nonwoven fabric, and has the characteristics of high breathability and quality deviation during manufacturing. It is characterized by a small amount.

According to an embodiment of the present invention, the filter 1000 for smoking articles may be any one of a recess filter, a dual filter, and a triple filter. In particular, the filter for smoking articles of the present invention may have a structure in which a recess filter is connected to a cigarette filter containing pure cotton nonwoven fabric.

The filter may include at least one of a porous matrix structure, a tube structure, and a paper tube structure, but is not limited thereto. In some embodiments, the filter material may further include at least one filter material well known in the art, such as an adsorbent containing carbon, activated carbon, etc.

As shown as an example in FIG. 2, the recess filter 200 is a filter having a substantially hollow space inside, and can be formed by wrapping with a tipping wrapper 300 and provides a unique end appearance. can do. The tipping wrapper 300 may simultaneously wrap the pure cotton non-woven fabric filter portion and serves to connect the medium portion and the filter in the smoking article.

The basis weight of the tipping wrapper may be 50 to 150 g/m ² . If the basis weight of the wrapper is less than 50 g/m ² , the hardness of the filter may weaken and affect the quality of the entire smoking article, and if it exceeds 150 g/m ² , it is difficult to roll the wrapper and manufacture it in the form of a filter. You can lose.

The tipping wrapper may be made of paper. The tipping wrapper may have a thickness of about 30 μm to 300 μm. If the thickness of the wrapper is less than 30 μm, the recess filter may not be formed sufficiently tightly, and if it exceeds 300 μm, it may cause inconvenience in wrapping the tipping wrapper.

Before wrapping with the tipping wrapper, a filter wrapper surrounding the filter portion may be further included. The filter wrapper may include any one of paper, flax, wood pulp, and polymer materials, but is not limited thereto.

According to one embodiment of the present invention, the basis weight of the pure cotton nonwoven fabric may be 30 to 70 g/m ² . If the basis weight is less than 30 g/m ² , the filter may not provide sufficient suction resistance, which may reduce the satisfaction of smoking, and if it exceeds 70 g/m ² , excessive force may be required for smoking.

According to one embodiment of the present invention, the filter for smoking articles may further include any one of cellulose acetate, lyocell, and paper material. The filter may further include the above-described ingredients in addition to the pure cotton non-woven fabric ingredient, and filters made of other ingredients may be added depending on the physical properties required for the smoking article.

According to one embodiment of the present invention, the cigarette filter of the present invention may have an average suction resistance of 50 to 150 mmH2O at a length of 20 to 30 mm, and a suction resistance deviation of 15 mmH2O or less. The circumference of the cigarette filter may be 22 to 25 mm. If the average suction resistance is less than 50 mmH ₂ O, the suction power may be insufficient and the satisfaction of smoking may not be satisfied, and if it exceeds 150 mmH ₂ O, the force required for suction may be excessive. The cigarette filter of the present invention is manufactured in a single layer method and has a suction resistance deviation of 15 mmH ₂ O or less, and can be used as a filter of uniform quality.

According to one embodiment of the present invention, the cigarette filter of the present invention may have a hardness of 80% or more, more specifically, 80% to 99%. After being combined with the tipping wrapper to form a recess filter, the hardness may be greater than 96%. A cigarette filter having the hardness range described above has an appropriate level of hardness, making it desirable for a user to smoke while holding the filter or holding it in his or her mouth.

According to one embodiment of the present invention, the cigarette filter may have an average weight of 50 to 150 mg at a length of 20 to 30 mm and a weight deviation of 3 mg or less. The circumference of the cigarette filter may be 22 to 25 mm. The cigarette filter may have a weight deviation of 3 mg or less, preferably 2.8 mg or less, and more preferably 0.1 to 2.8 mg. Since the variation in weight is not large, the cigarette filter containing the pure cotton nonwoven fabric of the present invention can maintain uniform quality.

According to an embodiment of the present invention, the filter for smoking articles may have a total particulate matter removal ability of 60% or more, a tar removal ability of 55% or more, a nicotine removal ability of 45% or more, and a moisture removal ability of 78% or more. . The removal ability is obtained by smoking a total of 20 cigarettes using an automatic smoking device (Smoking) under ISO smoking conditions for mainstream smoke in cigarette smoke, and calculating the average value of total particulate matter, tar, nicotine, and moisture in the total smoke condensate collected on the Cambridge filter pad. As a result of the measurement, the removal ability is measured by subtracting the weight of the filter before smoking from the weight of the filter after smoking.The ISO smoking conditions are 35 ml of water in a 2-second smoking period with a 1-minute smoking cycle without blocking the perforation of the tip paper. The smoking volume was smoked up to 3 mm above the tip paper.

In addition, the present invention includes a filter 1000 according to the present invention, as shown in FIG. 3; And a smoking article including a medium portion 400 can be provided.

The medium unit 400 is located upstream of the smoking article 2000, and the filter 1000 is located downstream of the smoking article 2000. The medium unit 400 contains tobacco material, and the filter unit 1000 includes at least one filter 100, 200 that passes mainstream smoke generated in the medium unit 400.

The medium portion 400 contains tobacco material. In addition, the medium unit 400 may further include other additives used with tobacco materials in the technical field to which the present invention pertains, such as aerosol-generating materials, flavoring materials, organic acids, and acetate compounds, in addition to tobacco materials.

The tobacco material may be tobacco leaf fragments, tobacco stems and/or tobacco fines generated during tobacco processing, etc. Alternatively, the tobacco material may be shredded tobacco leaves, shredded tobacco stems, shredded reconstituted tobacco, etc. For example, the tobacco material may include xanthoma, burley, oriental, lamellipodia, puffed cutweed, puffed veins, etc.

Additionally, tobacco materials may be flavored for purposes such as improving taste. Flavoring may be performed before and/or after cutting the raw tobacco material. The flavoring material used for flavoring may be in a liquid or solid state. Additionally, the flavoring material may be a natural product such as herb granules, or may be a material containing a fragrance such as silica, zeolite, or dextrin, but is not limited thereto.

Flavoring substances may include, but are not limited to, at least one of, for example, menthol, coffee, cinnamon, sugar, honey, vanilla, cocoa, strawberry, lemon, orange, mint, jasmine, chamomile, spearmint, peppermint, licorice, coriander and ginger. This does not mean that the type is particularly limited as long as it can play a role in improving the taste and aroma of cigarettes.

Although not shown in detail in the drawings, the medium portion 400 may include cigarette paper surrounding tobacco material, etc. Therefore, tobacco substances, etc. may be wrapped in cigarette paper and not leak out. At least a portion of the cigarette paper may be further wrapped with the tipping wrapper 300 along with the filter 1000. The cigarette paper may be paper, for example.

Meanwhile, the length, perimeter, diameter, etc. of the medium portion 400 are not particularly limited.

According to one embodiment of the present invention, the smoking article according to the present invention is illustrated as a combustion-type smoking article in FIG. 3, but may also be a heated smoking article. The heated smoking article refers to an article in which smoking is performed by applying heat using a heating means such as a heater without burning it.

As an example, the diameter of the smoking article may be 4 mm to 10 mm, and the circumference may be 15 mm to 30 mm. Additionally, the length may be 45 mm to 100 mm, but is not limited thereto.

Below, more specific examples will be described. 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.

[Example]

1. Manufacture of single-layer pure cotton non-woven fabric

It was manufactured using a single-layer method, which is a method of manufacturing pure cotton non-woven fabric by spreading American pure cotton (unbleached/bleached, stability evaluation completed) thinly using a card machine and then stacking several layers in the longitudinal direction to achieve the desired basis weight.

The results of analyzing the physical properties of the manufactured nonwoven fabric are shown in Table 1 below.

Item name Pure cotton non-woven single layer non-woven fabric 1 ^st roll ^2nd roll note average Deviation average Deviation Basis weight (g/m ² ) 41.2 0.6 43.6 0.9 Thickness (㎛) 185.3 6.4 191.4 0.9 Tensile strength (kgf/15㎜) 1.2 0.1 1.3 0.1 Elongation rate (%) 19.4 0.1 17.4 0.5 Whiteness (%) 90.2 0.1 90.7 0.0 Opacity (%) 57.2 0.2 58.6 0.6 moisture (%) 4.8 0.1 4.9 0.1

2. Manufacture of single-layer pure cotton non-woven filter

A filter was manufactured using the non-woven fabric prepared above under the conditions shown in Table 2 below.

Material width
(mm) Filter physical properties (96*23.70mm) Manufacturing conditions Workability Suction resistance Weight (mg) Circumference (mm) Hardness RPM crimp pressure average Deviation average Deviation average Deviation Example 1 (42 gsm) 160 482.9 39.9 677.8 4.0 23.56 0.053 88.5 550 0.43 ◎ Example 2 (45 gsm) 160 569.4 28.8 641.1 7.4 23.60 0.041 86.3 550 0.43 ◎

The workability of the pure cotton filter using pure cotton non-woven fabric was found to be at a good level (workability evaluation: 1st to 9th tests, 5 to 10 trays/time).

In addition, it was confirmed that the suction resistance deviation was similar to that of the paper filter (approximately 35 mmH2O / 480 mmH2O rod level), and that the target filter hardness (86 % or more) could be achieved with a filter hardness of 88%.

3. Manufacturing of cross-web type pure cotton non-woven filter

The table below shows the cross-web method, which is a method of manufacturing pure cotton non-woven fabric by spreading American pure cotton (unbleached/bleached, stability evaluation completed) thinly using a card machine and then stacking several layers in the diagonal direction to achieve the desired basis weight. Non-woven fabric was manufactured. A filter was manufactured using the manufactured non-woven fabric under the conditions shown in Table 3 below.

Material width
(mm) Filter physical properties (96*23.70mm) Manufacturing conditions Workability Suction resistance Weight (mg) Circumference (mm) Hardness RPM crimp pressure average Deviation average Deviation average Deviation Comparative Example 1 (41.4 gsm) 170 463.2 89.4 630.3 16.9 23.43 0.10 88.2 500 0.43 ◎ Comparative Example 2 (47.6 gsm) 180 484.5 158.7 814.2 35.7 23.26 0.18 95.1 500 0.43 ◎

Through the results of Tables 2 and 3, it can be seen that the filters of Examples 1 and 2 manufactured by the single layer method had significantly reduced suction resistance and weight deviation compared to the filters of Comparative Examples 1 and 2 manufactured by the crossweb method. Able to know. In particular, the filters of Examples 1 and 2 showed suction resistance and weight deviation at the level of current paper filters, confirming that filters with uniform quality could be manufactured.

4. Manufacturing of pure cotton non-woven applied recess filter

Using the filter prepared in step 2 above, a filter having a total length of 27 mm, including a pure cotton filter of 22 mm and a recess filter of 5 mm, was manufactured. For comparison, the filter of Comparative Example 3 was manufactured by replacing the pure cotton filter with acetate. The physical properties of the manufactured filter were confirmed and shown in Table 4.

division Specifications and raw material usage classification physicality filter length
(㎜) Suction resistance
(mmH ₂ O) toe
(De) Filter paper porosity
(cu) Plasticizer (TA)
content(%) Hardness(%) Suction resistance
(mmH ₂ O) recess T.E. M.E. T.E. M.E. T.E. M.E. T.E. finished product M.E. T.E. average average Deviation Comparative Example 3 5 22 0 - 3.0/35 - internal oil hard
122g - 8 98 477.7 18.1 Example 3 5 22 0 - pure cotton - internal oil hard
122g - - 98 469.2 34.4

※ Pure cotton mono filter hardness: 86.0%, suction resistance deviation: 36.4mmH2O

As a result of manufacturing the filter prototype, the physical properties of the pure cotton recess filter were confirmed to be at a good level compared to the control.

5. Cigarette prototype manufacturing

Using the filters of Comparative Example 3 and Example 3, cigarette prototypes of Comparative Example 4 and Example 4 were manufactured, respectively, as shown in Table 5 below.

division Physical properties _ Prototype manufacturing Selection conditions sample wt UPD E.P.D. VR Round gross weight E.P.D. VR gross weight ingredient corner candle mg mg mg mmWG mmWG % mm ±10mg ±7mmWG ±3% Comparative Example 4 943 337 606 72.3
(10.3) 156.3
(16.5) 77.46
(7.1) 24.78 943 165 74 Example 4 937 331 606 79.5
(16.3) 160.5
(18.4) 70.49
(9.7) 24.71 937 165 74

* Cut weight: 606mg Same selection, ( ): Deviation

As a result of manufacturing cigarette prototypes, the workability of small quantity cigarette manufacturing was good. The smoke component analysis results of the manufactured cigarettes are shown in Table 6, and the filter removal capacity was calculated accordingly and shown in Table 7.

division TPM Tar Nicotine C.O. Puff No. moisture sample mg/cig. mg/cig. mg/cig. mg/cig. episode mg/cig. Comparative Example 4 5.40 4.3 0.39 5.21 7.81 0.67 Example 4 3.97 3.1 0.30 4.73 7.94 0.56 Decrease rate (%) 26.4 28.3 24.1 9.3 - -

division Av. smoke Filter removal ability Puff No. TPM Tar Nick. moisture SRE TRE NRE WRE sample mg/cig. mg/cig. mg/cig. mg/cig. % % % % episode Comparative Example 4 41.58 27.52 1.78 12.28 59.3 52.1 42.2 77.8 6.7 Example 4 45.61 31.47 1.65 12.50 71.2 68.7 55.6 79.5 6.7 Change in removal capacity - - - - 11.9↑ 16.6↑ 12.4↑ 1.7↑

Through the results in Tables 6 and 7 above, it can be confirmed that the filter removal ability of cigarettes using the filter of the present invention is excellent.

6. Sensory evaluation of cigarette prototypes

Sensory evaluation was conducted on 16 panelists using the prototypes of Comparative Example 4 and Example 4, and the results are shown in Table 8.

response 1 Response 2 Response 3 response 4 response 5 Smelling strength plenty of smoke pepper This hobby Clean aftertaste Comparative Example 4 4.813 4.813 4.375 3.125 4.344 Example 4 4.344 4.344 4.313 3.250 4.188 Probability of significance (two-tailed) 0.011 ^** 0.003 ^*** 0.708 0.411 0.264

From the results in Table 8, it was confirmed that the cigarette of Example 4 to which the filter of the present invention was applied showed similar results compared to Comparative Example 4 to which an acetate filter was applied.

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.

100: Cigarette filter containing pure cotton non-woven fabric 200: Recess filter
300: Tipping wrapper 400: Beating unit
1000: Filter for smoking articles 2000: Smoking articles

Claims (9)

A cigarette filter comprising a pure cotton non-woven fabric,
A filter for smoking articles, wherein the pure cotton nonwoven fabric is manufactured in a single layer method.
According to paragraph 1,
The filter for smoking articles is any one of a recess filter, a dual filter, and a triple filter.
Filters for smoking articles.
According to claim 1 or 2,
The filter for smoking articles further includes one of cellulose acetate and paper material,
Filters for smoking articles.
According to claim 1 or 2,
The cigarette filter has an average suction resistance of 50 to 150 mmH ₂ O at a length of 20 to 30 mm, and a suction resistance deviation of 15 mmH ₂ O or less,
Filters for smoking articles.
According to claim 1 or 2,
The cigarette filter has a hardness of 80% or more,
Filters for smoking articles.
According to claim 1 or 2,
The cigarette filter has an average weight of 50 to 150 mg at a length of 20 to 30 mm and a weight deviation of 3 mg or less,
Filters for smoking articles.
According to claim 1 or 2,
The filter for smoking articles is,
The removal capacity of total particulate matter is more than 60%,
Tar removal ability is over 55%,
Nicotine removal ability is more than 45%,
Having a moisture removal capacity of 78% or more,
Filters for smoking articles.
A smoking article comprising the filter for the smoking article of claim 1.
According to clause 8,
The smoking article is,
A smoking article, which is a combustion-type smoking article.