KR20150032809A - Air filter media and air filter - Google Patents

Abstract

The subject of the present invention is providing an air filter medium containing a natural concentrate, which has physical strength hardly degraded even when affected by moisture. Provided are an air filter medium which is characterized by containing an air-permeable base material, wherein the air-permeable base material has a specific internal bonding strength, and contains a natural concentrate, and an air filter formed by using the air filter medium.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an air filter,

The present invention relates to an air filter filter material.

In recent years, with the spread of air conditioners, it has become possible to see a lot of living environments for purifying indoor air by using an air purifier, instead of ventilation of indoor air by opening and closing windows.

The substances collected by the air filter of the air cleaner include fungi, viruses, allergens such as ticks and pollen, and spores of mold. Since these substances cause diseases, it is desirable to deactivate them on the captured air filter.

The antimicrobial activity against fungi typified by Escherichia coli and Staphylococcus aureus is an important characteristic of air filters. In order to inactivate the fungus, a method of adding an antimicrobial agent to the air-permeable base material contained in the air filter medium is generally used. Antimicrobial agents are broadly classified into antimicrobial agents produced by synthesis and antimicrobial agents composed of natural extract components. Recently, antimicrobial agents composed of natural extract components are preferably used due to heightened interest in safety.

For example, an air filter (see, for example, Patent Document 1) having a material containing an extracting component of tea and a fungicide as an effective air filter for bacteria, fungi, viruses and the like is disclosed. As an effective air filter for fungi and viruses, an air filter carrying Ginkgo biloba extract (see, for example, Patent Document 2) is disclosed.

As an air filter effective for allergen, an air filter (see Patent Document 3, for example) carrying an automobile catechin and an air filter (see, for example, Patent Document 4) carrying an enzyme are disclosed. Further, as an anti-allergen component, a mask having an aromatic hydroxy compound carried thereon (see, for example, Patent Document 5) is disclosed, and it is expected to be used as an air filter.

However, since the majority of these natural extract components are abundant in hydrophilicity, the air filter media containing the natural extract components are susceptible to the influences of moisture in the air and tend to lower the physical strength with time, There is a specific problem. The physical strength is lowered, and the air filter structure is changed to deteriorate the air permeability of the air filter, which is not preferable. However, effective countermeasures concerning this problem have not been disclosed so far.

Patent Document 1: JP-A-10-315 Patent Document 2: International Publication No. 2006/011541 Pamphlet Patent Document 3: Japanese Patent Application Laid-Open No. 2000-5531 Patent Document 4: JP-A-2003-210919 Patent Document 5: JP-A-2003-79756

An object of the present invention is to provide an air filter filter material which is hardly deteriorated in physical strength even in the case of an air filter filter material containing a natural extract component

The present invention is an invention characterized in that the air filter medium comprises an air permeable base material, the air permeable base material has a specific internal bond strength and contains a natural extract component.

That is,

1. An air filter material to be subjected to pleating, wherein the air filter material comprises an air-permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 0.1 to 1.0 mm, wherein the air- Wherein the air filter medium comprises an air filter material.

2. An air filter medium in which pleating is not performed, wherein the air filter medium comprises an air permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 1.0 to 15 mm, wherein the air permeable base material comprises a natural extract component Wherein the air filter medium comprises an air filter material.

3. An air filter media in which a support substrate and a charging melt-blown nonwoven fabric or a charging and spunbond nonwoven fabric are laminated and integrated, wherein the support substrate comprises a breathable substrate having an internal bonding strength of 65 to 250 mJ and a thickness of 0.1 to 1.0 mm Wherein the air permeable base material contains a natural extract component.

4. The pharmaceutical composition according to any one of items 1 to 3, wherein the natural extract component is at least one member selected from the group consisting of coffee bean extract, grapefruit seed extract, mulberry leaf extract, Forsythia extract, and calcium oxide compound obtained by baking the shell Wherein the air filter material is an air filter material.

5. An air filter formed by using the air filter material according to any one of 1 to 4 above.

The antimicrobial air filter material of the present invention has the effect of inactivating the fungi trapped on the air filter by the effect of the natural extract component and hardly causing the physical strength of the air filter to be lowered even under the influence of moisture in the air .

Hereinafter, the antibacterial air filter material of the present invention will be described in detail.

Examples of the air filter media of the present invention include the following three types of air filter media: A to C;

A. Air filter media to be processed by pleats

B. Air filter media without pleat processing

C. An air filter material in which a support base and a charging meltblown nonwoven fabric or a charging spunbond nonwoven fabric are laminated and integrated with each other

In the air filter filter material A, pleat processing is performed on the air filter filter material, and then molded to form an air filter. In the air filter filter material B, the air filter material is not subjected to pleating, but is molded from the state of a flat plate to form an air filter. In the air filter filter material C, pleat processing is applied to the air filter material in which the support base material and the electrification melt blown nonwoven fabric or the electrification spunbond nonwoven fabric are laminated and integrated, and then molded to form an air filter.

The air filter medium A is characterized in that the air filter medium contains an air permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 0.1 to 1.0 mm and the air permeable base material contains a natural extract component .

The air filter medium material B is characterized in that the air filter medium material contains an air permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 1.0 to 15 mm and the air permeable base material contains a natural extract component do.

In the air filter medium material C, the support substrate comprises a breathable substrate having an internal bonding strength of 65 to 250 mJ and a thickness of 0.1 to 1.0 mm, and the breathable substrate contains a natural extract component do.

(JAPAN TAPPI) Paper Pulp Test Method No. 18-2: 2000 " Paper and paperboard - Test method for internal bond strength - Part 2: &Quot; Internal bond tester method " (Paper and board-Determination of internal bond strength Part 2: Internal bond tester method).

In the present invention, the air filter medium comprises an air permeable base material having a pitting strength of 65 to 250 mJ. The strength of the air-permeable base material is preferably 80 to 230 mJ, and more preferably 85 to 210 mJ. In the present invention, the breathable substrate contains a natural extract component. However, since this natural extract component is hydrophilic, when the breathable substrate has an interbath strength of less than 65 mJ, the breathable substrate is affected by moisture in the air, The air filter structure is changed and the air permeability of the air filter deteriorates, which is not preferable. Further, in the air filter media A and C, cracks may occur in the air filter media when pleat processing is performed. Further, in the air filter material C, when the charging melt-blown nonwoven fabric or the charging spunbond nonwoven fabric and the supporting substrate are peeled off at the folding portion and the air filter is formed by the pleat processing, the peeled portion is caught, The air filter material may be split, which is not preferable. On the other hand, when the breathability of the air-permeable base material is more than 250 mJ, the number of fibers constituting the air-permeable base material is increased or the amount of the adhesive added for reinforcement is increased to decrease the air gap between the fibers, , Which is undesirable.

In the present invention, the method of adjusting the strength of the bonding strength of the air-permeable base material to a specific range is not particularly limited as long as it is a method of strengthening entanglement of the fibers constituting the air-permeable base material. For example, A method of increasing the number of fibers, a method of increasing the intersection point of each fiber, a method of giving an adhesive to the intersection of each fiber to improve the adhesion between the fibers at the intersection, and a method of strengthening the entanglement of each fiber can do.

In the case of the air filter material A in which pleat processing is performed, the thickness of the air permeable base material is 0.1 to 1.0 mm, more preferably 0.2 to 0.9 mm, and further preferably 0.3 to 0.7 mm. If the air permeable base material is thinner than 0.1 mm, the physical strength is lowered, so that cracks may occur during pleating, which is not preferable. On the other hand, if the air-permeable base material is thicker than 1.0 mm, the mountain-like sharpness of the bent portion of the pleats is inferior, and the air permeability of the air filter filter material may be poor.

In the case of the air filter material B not subjected to pleating, the thickness of the air permeable base material is 1.0 to 15 mm, more preferably 2 to 12 mm, and further preferably 3 to 10 mm. If the air permeable base material is thinner than 1.0 mm, the dust collecting efficiency may deteriorate, which is not preferable. On the other hand, if the air permeable base material is thicker than 15 mm, the air permeability of the air filter media may be poor, which is not preferable.

In the case of the air filter material C in which the support base material and the electrification melt blown nonwoven fabric or the electrification spunbond nonwoven fabric are laminated and integrated, the thickness of the breathable base material is 0.1 to 1.0 mm, more preferably 0.2 to 0.9 mm, To 0.8 mm. If the air permeable base material is thinner than 0.1 mm, the physical strength is lowered, so that cracks may occur during pleating, which is not preferable. On the other hand, if the air permeable base material is thicker than 1.0 mm, the air permeability of the air filter filter material may be poor, which is not preferable.

In the present invention, the natural extract component is extracted from a natural product. Examples of the natural extract include tea leaf extract, ginko leaf extract, pine cone extract, lacquer extract, and the like. In the present invention, coffee bean extract, grapefruit seed extract, mugwort extract, It is preferable to use at least one kind selected from the group of calcium oxide compounds obtained. When the natural extract component is at least one kind selected from these groups, the effect that the physical strength of the air filter is hardly further lowered even under the influence of moisture in the air can be obtained.

The coffee bean extract is a hydrophilic natural extract component extracted from raw coffee beans and is known to contain a large amount of chlorogenic acids. The inventors of the present invention have found that coffee bean extract has excellent antimicrobial activity and have reached the present invention. The natural extract ingredient extracted from coffee beans after roasting is not preferable because the content of chlorogenic acids is remarkably reduced as compared with the raw coffee beans. Recently, it has been known that chlorogenic acid has a strong antioxidative action. Recently, attention has been paid to the action of promoting the energy consumption and fat decomposition of chlorogenic acids and caffeine, which are natural extract components extracted from raw coffee beans, . The chlorogenic acid is composed of cinnamic acid derivatives and esters of quinic acid. The natural extract components extracted from the raw coffee beans include 3-caffeoylquinic acid, 4-caffeoylquinic acid, 5-caffeoylquinic acid, , 3,5-dicaffeoylquinic acid, 4,5-dicapheylquinic acid, and 5-feruloylquinic acid.

The dry content of the coffee bean extract is preferably 3 to 10 g / m ² , more preferably 4 to 9 g / m ² , and still more preferably 5 to 8 g / m ² based on the breathable substrate. When the dry content is less than 3 g / m ² , sufficient antibacterial properties may not be obtained. If the dry content is more than 10 g / m ² , sufficient antimicrobial activity is obtained, but there is a possibility that the odor derived from the natural extract ingredient may be uncomfortable to a sensitive person.

Grapefruit seed extract is a hydrophilic natural extract component extracted from seeds of immature fruit of grapefruit. The inventors of the present invention have found that grapefruit seed extract has excellent antimicrobial activity and have reached the present invention. A method for extracting a natural extract component from grapefruit seeds is not particularly limited and can be obtained according to the method disclosed so far. Alternatively, the extracted natural extract component may be used as it is, and if necessary, purified, concentrated and dried components may be used as a powder or a diluted one may be used.

The effective ingredient amount of the grapefruit seed extract is preferably 0.01 to 10 g / m ² , more preferably 0.05 to 9 g / m ² , and still more preferably 0.1 to 8 g / m ² based on the breathable substrate. When the effective ingredient amount is less than 0.01 g / m ² , sufficient antibacterial properties may not be obtained. When the effective ingredient amount is more than 10 g / m ² , sufficient antimicrobial activity is obtained, but there is a possibility that the odor derived from the natural extract ingredient may be felt uncomfortable to a sensitive person.

The wormwood extract is a hydrophilic natural extract component extracted from dried mugwort leaves. Mizusugi is a plant of Asteraceae, and it has been used for edible because it has been put in mugwort and mugwort dumpling since ancient times. On the other hand, in oriental medicine, wormwood is called "葉 葉", and it is used as hemostasis, anal pain, and tonic. In addition, it is famous that it is used as moxibustion which is made with dry foliage of mugwort. The main component extracted from mugwort is tannin, and the inventors of the present invention have found that mugwort leaf extract has excellent antimicrobial activity and have reached the present invention. The method for extracting the natural extract component from the mugwort leaf is not particularly limited and can be obtained according to the method disclosed so far. For example, natural extract components extracted from dried mugwort leaves can be used. Further, the extracted natural extract component may be used as it is, and if necessary, purified, concentrated and dried components may be used as a powder or a diluted one may be used.

The dry content of the waxy larvae is preferably 1 to 10 g / m ² , more preferably 2 to 9 g / m ² , and still more preferably 3 to 8 g / m ² based on the breathable substrate. If the dry content is less than 1 g / m ² , sufficient antibacterial properties may not be obtained. If the dry content is more than 10 g / m ² , sufficient antimicrobial activity is obtained, but there is a possibility that the odor derived from the natural extract ingredient may be uncomfortable to a sensitive person.

피부병등의 진통약에 이용되고 있으며, 친유성의 트리테르펜, 모노테르펜글리코시드, 친수성의 리그난을 포함한다. 이 경우, 개나리의 성숙 과실을 한 번 증기에 통과시킨 후, 햇볕에 건조하여 이용된다. 본 발명에 있어서도, 성숙 과실 및 그 내부의 종자로부터 추출된 천연 엑기스 성분을 사용할 수 있다. 본 발명의 발명자들은, 개나리로부터 추출된 천연 엑기스 성분에 항균성이 있는 것을 발견하여, 본 발명에 이르렀다.Forsythia extract is a natural extract component extracted from dried Forsythia fruit. Forsythia suspensa (Thunb.) Vahl is a deciduous tree of deciduous forests of aspens and forsythia. The nickname is Ren Kyou Tsugi, and the old name is Itachi Hase, Itachi Kusa. Chinese name is Huangshan, and English name is golden bell (golden bell flower). In Oriental medicine, "Lenghyo" is a combination of antipyretic, antiphlogistic, diuretic,

It is used for analgesic drugs such as skin diseases, and includes lipophilic triterpenes, monoterpene glycosides, and hydrophilic lignans. In this case, the mature fruit of the forsythia is once passed through a steam and dried in the sun. Also in the present invention, mature fruit and natural extract components extracted from seeds therein can be used. The inventors of the present invention have found that natural extract components extracted from an anthurium have antimicrobial activity, and have reached the present invention.

The dry content of the forgery extract is preferably 1 to 10 g / m ² , more preferably 2 to 9 g / m ² , and still more preferably 3 to 8 g / m ² based on the breathable substrate. If the dry content is less than 1 g / m ² , sufficient antibacterial properties may not be obtained. If the dry content is more than 10 g / m ² , sufficient antimicrobial activity is obtained, but there is a possibility that the odor derived from the natural extract ingredient may be uncomfortable to a sensitive person.

The calcium oxide compound (calcined CaO) obtained by baking the shell is preferably calcined at a shell temperature of preferably 700 ° C or higher, more preferably 1000 ° C or higher, more preferably 1100 ° C or higher, Is a natural calcium oxide compound obtained by removing carbon dioxide from calcium. Shells such as oysters, scallops, pearl shells, and clams are used as shells, but shells such as oysters and scallops that are mainly cultured can be preferably used. The calcium oxide compound obtained by baking the shell is dissolved in water, and the aqueous solution shows alkalinity. The pH of the aqueous solution can be 10 or more, and a strong alkaline aqueous solution having a pH of 12 or more can be obtained. This strongly alkaline aqueous solution of calcined CaO exhibits a strong germicidal effect. In addition, even with the shell calcined CaO itself, a strong germicidal effect is exhibited.

The dry content of the shell calcined CaO is preferably 0.5 to 10 g / m ² , more preferably 1.0 to 9 g / m ² , still more preferably 3.0 to 8 g / m ² , based on the breathable substrate Do. When the dry content is less than 0.5 g / m ² , sufficient antibacterial properties may not be obtained. When the dry content is more than 10 g / m ² , sufficient antimicrobial activity is obtained, but there is a possibility that the odor derived from the shell calcined CaO is unpleasant to a sensitive person.

In the present invention, it is preferable to use at least one natural extract component selected from the group of coffee bean extract, grapefruit seed extract, mulberry leaf extract, Forsythia extract, and shell calcined CaO. This is because, as described above, Because of its excellent antibacterial properties. In addition, from the viewpoint of the user of the air filter, it is preferable to use an air filter medium containing a natural extract component having a new and intimate feeling in accordance with a variety of lifestyle and preferences. As described above, the natural extract components of this group are derived from foods and beverages, medicines, and souvenirs. Therefore, there is an advantage that the user can be accepted without intimacy with safety and with intimacy. In addition, lifestyle and preferences are influenced by countries and regions. Therefore, by containing natural extract ingredients suitable for a country or region in an air filter filter material, the user can feel psychological ease of use. This effect is high, for example, in countries and regions (Asian countries, especially Korea) that prefer coffee beans, grapefruit, wormwood, clam and mountain vegetables, and forage for gardening.

When antiviral, antiallergic, antifungal or the like is required in addition to the antibacterial property as the characteristic of the air filter, other natural extract components may be used in combination. Examples of natural extract components that can be used in combination include tea leaf extract (catechin), ginkgo leaf extract, pine cone extract, and lacquer extract, but the present invention is not limited to these natural extract components.

In the present invention, the air-permeable base material to be used may be appropriately selected from nonwoven fabrics such as nonwoven fabric and paper, and it is preferable that the nonwoven fabric be a nonwoven fabric in view of easy control of fiber blending, weight per unit area, thickness, As a substrate. The nonwoven fabric is produced by a spun bond method, a melt blowing method, a dry method (carding method, thermal bond method, resin bond method, needle punch method, spun lace method, stitch bond method) At least one method can be selected from the method. If necessary, a plurality of these methods can be combined.

복합하여, 2종 이상으로 사용해도 된다.Examples of raw materials for the sheet material include polyamide-based, polyester-based, polyalkylene paraoxybenzoate-based, polyurethane-based, polyvinyl alcohol-based, polyvinylidene chloride-based, polyvinyl chloride-based, polyacrylonitrile- Synthetic resins such as acrylic ester, polyolefin and phenol; inorganic materials such as glass, metal, alumina, carbon and activated carbon; wood pulp, bamboo pulp, Mabul pulp, kenaf pulp, straw pulp, Natural fibers such as cotton linter pulp, cotton, wool, and silk; recycled pulp, recycled cellulose such as rayon and cupra; proteins such as collagen; These materials may be imparted with functions such as hydrophilicity and flame retardancy. These materials may be used alone,

They may be used in combination of two or more.

The method of containing (supporting) the natural extract component in the sheet material is not particularly limited so long as the natural extract ingredient can be contained on the surface of the sheet material as uniformly as possible. For example, a method in which a natural extract component is applied as a solution or dispersion to a sheet material by a method such as coating, impregnation or spraying, and a solvent or a dispersion medium is removed by a method such as drying to contain a natural extract component . In addition, a method of adding a natural extract component by means of kneading or the like to a resin or a metal which is a raw material for the sheet-like material. In addition to the above method, a method of adding a natural extract component to a raw fiber slurry in the step of producing a raw fiber by sheet-making using a paper machine when a paper or nonwoven fabric is produced by a wet process, and then forming the sheet together.

In the case where the natural extract component is contained in a strong binding force to the air permeable base material and the appearance of the product is improved by combining with another component or tinting or the like, in a range that does not inhibit the effect of the natural extract component, (Adhesive) can be used.

Examples of the water-soluble binder include polyvinyl alcohol and starch. Examples of the water-dispersible binder include poly (meth) acrylate esters, polyvinyl acetate, polyvinyl chloride, styrene-butadiene latex and the like. The binder usable in the present invention is not limited to these.

The strength of the internal resistance of the sheet material is not particularly limited, but may be in the range of from 65 to 250 mJ, preferably from 60 to 245 mJ, more preferably from 62 to 242 mJ, More preferably 65 to 240 mJ. In the case where the strength of the sheet-like material is less than 60 mJ or larger than 245 mJ, the strength of the strength of the air-permeable substrate may not be within a predetermined range.

In the case of the air filter media A to be pleated, the thickness of the sheet material is not particularly limited, but may be in the range of 0.1 to 1.0 mm, preferably 0.1 to 1.0 mm, more preferably 0.1 to 1.0 mm, Is 0.2 to 0.9 mm, and more preferably 0.3 to 0.7 mm. When the sheet material is thinner than 0.1 mm or thicker than 1.0 mm, the thickness of the air-permeable base material may not fall within a specific range.

In the case of the air filter media B in which pleating is not performed, the thickness of the sheet material is not particularly limited and may be in the range of 1.0 to 15 mm, preferably 1.0 to 15 mm, Is 2 to 12 mm, and more preferably 3 to 10 mm. When the sheet material is thinner than 1.0 mm or thicker than 15 mm, the thickness of the air-permeable base material may not fall within a specific range.

In the case of the air filter material C in which the support base material and the electrification melt blown nonwoven fabric or the electrification spunbond nonwoven fabric are laminated and integrated, the thickness of the sheet material is not particularly limited as long as the thickness of the breathable base material is in the range of 0.1 to 1.0 mm, Preferably 0.1 to 1.0 mm, more preferably 0.2 to 0.9 mm, and still more preferably 0.3 to 0.8 mm. When the sheet material is thinner than 0.1 mm or thicker than 1.0 mm, the thickness of the air-permeable base material may not fall within a specific range.

Examples of raw materials for the electrification meltblown nonwoven fabric or the electrification spunbond nonwoven fabric include polyolefin resins, polyester resins, polyamide resins, and acrylic resins. Of these, polypropylene, which is a polyolefin-based resin, is preferably used from the viewpoints of ease of spinning and good chargeability. A method of charging the meltblown nonwoven fabric or the spunbonded nonwoven fabric is not particularly limited and may be a method of carrying out a nonwoven fabric between a pair of electrodes to which a DC current is applied or a method of applying a DC corona discharge to a non- .

The air permeable base material can be used as it is as the base material of the air filter media A and B and the air filter media C as it is. Further, the air permeable base material and the other sheet-like materials may be used as a base material for the air filter media A and B and the air filter media C by a method such as joining.

As the pleat processing method in the air filter filter media A and C in the present invention, the blades arranged one above the other are alternately moved so that the reciprocating type sandwiching the air filter filter material therebetween, There is a lapping formula which carries out a line at a certain interval while being conveyed, and any method can be used provided that the desired pleated product is obtained. The air filter media A, B, and C in the present invention are supported by a frame body and formed into an air filter. Examples of the frame body include paper, corrugated cardboard, nonwoven fabric, and resin.

The method of bonding (laminating) the support base material with the electrification melt blown nonwoven fabric or the electrification spunbond nonwoven fabric in the air filter media C of the present invention is not particularly limited and may be selected from a thermal bond method, an embossing roll, , A physical method such as a needle punching method and a water flow discoloration method, and the like. Thermal bonding using a thermal bond method using an adhesive is preferable in that a relatively large fiber amount is strongly bonded between at least two layers.

In addition, in order to stably contain the natural extract component with the air permeable base material to maintain the effects such as antibacterial effect for a longer period of time and to alleviate the unusual odor derived from the natural extract component, a porous powder For example, powders of activated carbon or zeolite) may be contained in the air filter material containing the air-permeable base material. The present invention also relates to a method for producing a detergent composition which is capable of preventing deodorization, antibacterial action, fungus, antiviral, insecticide, insecticide, deodorization, It has various functions such as heating, endothermic, waterproof, water-proof, water-repellent, water-repellent, hydrophilic, dehumidifying, humidifying, absorbing, oiling, .

The air filter media and the air filter of the present invention can be used in an air treatment apparatus by forced air supply and exhaust by a machine such as an air conditioner, an air purifier, a vacuum cleaner, a dehumidifier, a dryer, a humidifier, a ventilating fan, Inactivation of the deodorizing agent can be obtained. In addition, the air filter material and the air filter of the present invention may be used for the outside air inlet (air vent, windows, etc.) for natural air supply and exhaust.

Example

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. In the examples, "% " and " part " indicate " mass% " and " part by mass ", respectively, unless otherwise specified.

Each natural extract component was obtained or prepared in the following manner.

Coffee bean extract (abbreviation: coffee): CAPENOL P-100 (trade name) manufactured by FUJI CHEMICAL INDUSTRY, CO., LTD. Was used as a natural extract component extracted from coffee beans.

Grapefruit seed extract (abbreviation: GF): Grapefruit seed extract D-100 (trade name) manufactured by Matsuo Yakuhin Sangyo Co., Ltd. was used as a natural extract component extracted from grapefruit seeds.

Mugwort Leaf Extract (abbreviated as Mugwort): Mugwort dry extract F (trade name) manufactured by MARUZEN PHARMACEUTICALS CO., LTD. Was used as a natural extract component extracted from Mugwort leaf.

Forsythia extract (abbreviated as "forsythia"): In the following method, mature fruits of forsythia and natural extract components extracted from seeds were used.

분액하여 하층부를 얻었다. 그 하층부를 감압 농축하여, 갈색의 점조물을 얻었다. 그 점조물을 약 30배의 프로필렌글리콜 및 정제수의 혼합액(용적비 8:2)에 용해하여, 미량의 불용물을 여과지 여과하여, 8g의 개나리 천연 엑기스 용액을 얻었다. 본품 1g은, 건조한 개나리 건조 엑기스 0.1g에 상당한다.8 kg of a mixed solution of ethanol and purified water (volume ratio 1: 1) was added to 1 kg of dried fruit of mature fruit of Forages and seeds, and the mixture was stirred at 20 to 40 ° C for 7 hours. The solid was filtered, and the filtrate was washed with 60? , And the mixture was concentrated under reduced pressure until the total volume became about one tenth the volume. After 0.5 kg of ethyl acetate was added and sufficiently stirred,

And the lower layer portion was obtained. The lower layer was concentrated under reduced pressure to obtain a brown viscous material. The resulting viscous substance was dissolved in a mixed liquid of propylene glycol and purified water (volume ratio 8: 2) about 30 times, and a small amount of insoluble matter was filtered through filter paper to obtain 8 g of forgery extract. 1 g of this product corresponds to 0.1 g of dry forage dried extract.

Fortified calcined CaO (abbreviation: shell): Okhotsk Calcium (registered trademark) F-015 (trade name) manufactured by Natural Japan was used.

(Internal bond strength)

The bond strength of the sheet-like material and the air-permeable substrate was measured according to J.TAPPI Paper Pulp Test Method No. 1. 18-2: 2000. The unit is mJ. The larger the number, the stronger the internal strength is.

(thickness)

The thickness was measured according to the method described in JIS L1096 8.4 Method A (JIS method). The unit is mm.

[Air filter material A]

(Example 1)

A coffee bean extract (natural extract component) was diluted with water to a polyester spunbond nonwoven fabric (sheet form) having a piercing strength of 64 mJ and a thickness of 0.5 mm, uniformly applied by spraying, and dried at 120 DEG C to obtain a natural extract component Was prepared, and this air-permeable substrate was used as an air filter filter material. The dry content of the natural extract component was 5 g / m ² . The air filter material was used to form a pleat-shaped air filter having a width of 283 mm, a height of 368 mm, a depth of 10 mm and a pitch of 13 mm to prepare an air filter.

(Example 2)

An air filter filter material and an air filter were produced in the same manner as in Example 1 except that a polyester spunbond nonwoven fabric having a pinched resistance of 168 mJ and a thickness of 0.5 mm was used as the sheet-like material.

(Example 3)

An air filter filter material and an air filter were produced in the same manner as in Example 1 except that a polyester spunbonded nonwoven fabric having a 24 mm ID yarn endurance strength and a thickness of 0.5 mm was used as the sheet material.

(Example 4)

An air filter filter material and an air filter were produced in the same manner as in Example 1, except that a polyester spunbonded nonwoven fabric having a pincer strength of 170 mJ and a thickness of 0.1 mm was used as the sheet-like material.

(Example 5)

An air filter filter material and an air filter were produced in the same manner as in Example 1, except that a polyester spunbonded nonwoven fabric having a pincer strength of 169 mJ and a thickness of 1.0 mm was used as the sheet-like material.

(Example 6)

An air filter filter material and an air filter were produced in the same manner as in Example 2 except that the dry matter content of the natural extract ingredient was 3 g / m ² .

(Example 7)

An air filter filter material and an air filter were produced in the same manner as in Example 2 except that the dry matter content of the natural extract ingredient was 10 g / m ² .

(Example 8)

A grapefruit seed extract (natural extract component) was diluted with water in a polyester spunbonded nonwoven fabric (sheet form) having a kneading strength of 171 mJ and a thickness of 0.5 mm and uniformly coated by spraying and dried at 120 DEG C to obtain a natural extract And the air permeable base material was used as an air filter filter material. The effective ingredient amount of the natural extract component was 0.01 g / m ² . The air filter material was used to form a pleat-shaped air filter having a width of 283 mm, a height of 368 mm, a depth of 10 mm and a pitch of 13 mm to prepare an air filter.

(Example 9)

An air filter filter material and an air filter were produced in the same manner as in Example 8 except that the amount of the effective ingredient of the natural extract ingredient was 3 g / m ² .

(Example 10)

An air filter filter material and an air filter were produced in the same manner as in Example 8 except that the effective ingredient amount of the natural extract ingredient was 10 g / m ² .

(Example 11)

The waxy leaf extract (natural extract component) was diluted with water to a polyester spunbonded nonwoven fabric (sheet form) having a hardening strength of 170 mJ and a thickness of 0.5 mm and uniformly applied by a spray method and dried at 120 DEG C to obtain a natural extract component , And this air-permeable base material was used as an air filter filter material. The dry content of the natural extract component was 1 g / m ² . Using this air filter filter material, a pleat air filter having a width of 283 mm, a height of 368 mm, a depth of 10 mm and a pitch of 13 mm was formed to produce an air filter.

(Example 12)

An air filter filter material and an air filter were produced in the same manner as in Example 11 except that the dry matter content of the natural extract ingredient was 4 g / m ² .

(Example 13)

An air filter filter material and an air filter were produced in the same manner as in Example 11, except that the dry matter content of the natural extract ingredient was 10 g / m ² .

(Example 14)

(Natural extract component) was diluted with water to a polyester spunbonded nonwoven fabric (sheet material) having a kneading strength of 171 mJ and a thickness of 0.5 mm, uniformly applied by spraying, and dried at 120 DEG C to obtain a natural extract component , And this air-permeable base material was used as an air filter filter material. The dry content of the natural extract component was 1 g / m ² . The air filter material was used to form a pleat-shaped air filter having a width of 283 mm, a height of 368 mm, a depth of 10 mm and a pitch of 13 mm to prepare an air filter.

(Example 15)

An air filter filter material and an air filter were produced in the same manner as in Example 14 except that the dry matter content of the natural extract ingredient was 4 g / m ² .

(Example 16)

An air filter filter material and an air filter were produced in the same manner as in Example 14 except that the dry matter content of the natural extract ingredient was 10 g / m ² .

(Example 17)

(Natural extract component) was diluted with water, uniformly applied by a spraying method, and dried at 120 DEG C, to a polyester spunbonded nonwoven fabric (sheet material) having a kneading strength of 171 mJ and a thickness of 0.5 mm to obtain a natural extract component Was prepared, and this air-permeable substrate was used as an air filter filter material. The dry content of the natural extract component was 0.5 g / m ² . The air filter material was used to form a pleat-shaped air filter having a width of 283 mm, a height of 368 mm, a depth of 10 mm and a pitch of 13 mm to prepare an air filter.

(Example 18)

An air filter filter material and an air filter were produced in the same manner as in Example 17 except that the dry matter content of the natural extract ingredient was 3 g / m ² .

(Example 19)

An air filter filter material and an air filter were produced in the same manner as in Example 17 except that the dry matter content of the natural extract ingredient was 10 g / m ² .

(Example 20)

(Manufactured by Kiseitec Limited Company, trade name: Kisei Tech PR2003, abbreviation: Hinoki) as a natural extract component was immersed in a polyester spunbonded nonwoven fabric (sheet form) having a punching strength of 171 mJ and a thickness of 0.5 mm, Diluted, sprayed uniformly, and dried at 120 DEG C to prepare a breathable base material containing a natural extract component, and this breathable base material was used as an air filter medium. The dry content of the natural extract component was 3 g / m ² . The air filter material was used to form a pleat-shaped air filter having a width of 283 mm, a height of 368 mm, a depth of 10 mm and a pitch of 13 mm to prepare an air filter.

(Comparative Example 1)

An air filter filter material and an air filter were obtained in the same manner as in Example 2 except that no natural extract component was attached.

(Comparative Example 2)

An air filter filter material and an air filter were produced in the same manner as in Example 1 except that a polyester spunbond nonwoven fabric having a pincer strength of 61 mJ and a thickness of 0.5 mm was used as a sheet-like material.

(Comparative Example 3)

An air filter filter material and an air filter were produced in the same manner as in Example 1 except that a polyester spunbonded nonwoven fabric having a pincer strength of 271 mJ and a thickness of 0.5 mm was used as the sheet-like material.

(Comparative Example 4)

An air filter filter material and an air filter were produced in the same manner as in Example 1 except that a polyester spunbonded nonwoven fabric having a pinched resistance of 172 mJ and a thickness of 0.05 mm was used as the sheet material.

(Comparative Example 5)

An air filter filter material and an air filter were produced in the same manner as in Example 1 except that a polyester spunbonded nonwoven fabric having a hardening strength of 167 mJ and a thickness of 1.5 mm was used as the sheet material.

[Air filter material B]

(Example 21)

A coffee bean extract (natural extract component) was diluted with water to a polyester spunbonded non-woven fabric (sheet form) having a piercing strength of 66 mJ and a thickness of 7 mm and uniformly applied by a spray method and dried at 140 占 to obtain a natural extract component , And this air-permeable base material was used as an air filter filter material. The dry content of the natural extract component was 5 g / m ² . The air filter material was cut into a size of 283 mm in width x 368 mm in depth and formed into a flat plate air filter to produce an air filter.

(Example 22)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbonded nonwoven fabric having a pinched resistance of 170 mJ and a thickness of 7 mm was used as the sheet material.

(Example 23)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbonded nonwoven fabric having a 24 mm ID and 24 mm thickness as the sheet material was used.

(Example 24)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbonded nonwoven fabric having a hardening strength of 171 mJ and a thickness of 1.0 mm was used as the sheet material.

(Example 25)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbond nonwoven fabric having a pincer strength of 171 mJ and a thickness of 15 mm was used as the sheet-like material.

(Example 26)

An air filter filter material and an air filter were produced in the same manner as in Example 22 except that grapefruit seed extract was used as a natural extract component and the dry content thereof was 3 g / m ² .

(Example 27)

An air filter filter material and an air filter were produced in the same manner as in Example 22 except that the extract of Curcuma longa extract was used as a natural extract component and the dry content thereof was 4 g / m ² .

(Example 28)

An air filter filter material and an air filter were produced in the same manner as in Example 22 except that the Forsythia extract was used as a natural extract component and the dry content thereof was 4 g / m ² .

(Example 29)

An air filter filter material and an air filter were produced in the same manner as in Example 22 except that the shell calcined CaO was used as a natural extract component and the dry content thereof was 3 g / m ² .

(Comparative Example 6)

An air filter filter material and an air filter were obtained in the same manner as in Example 22 except that no natural extract component was attached.

(Comparative Example 7)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbonded nonwoven fabric having a pincer strength of 58 mJ and a thickness of 7 mm was used as the sheet-like material.

(Comparative Example 8)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbonded nonwoven fabric having a thickness of 7 mm and a resistance to breakage of 274 mJ was used as the sheet-like material.

(Comparative Example 9)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbonded nonwoven fabric having a pincer strength of 171 mJ and a thickness of 0.8 mm was used as the sheet material.

(Comparative Example 10)

An air filter filter material and an air filter were produced in the same manner as in Example 21 except that a polyester spunbonded nonwoven fabric having a strength of 169 mJ and a thickness of 18 mm was used as a sheet material.

[Air filter material C]

(Example 30)

A coffee bean extract (natural extract component) was diluted with water to a polyester spunbonded nonwoven fabric (sheet form) having a pitting strength of 65 mJ and a thickness of 0.5 mm and uniformly coated by spraying and dried at 120 DEG C to obtain a natural extract component Was prepared and used as a support substrate. The dry content of the natural extract component was 5 g / m ² . A particulate adhesive powder (400 탆 diameter) of ethylene-vinyl acetate copolymer (EVA) was spread on this support substrate at 10 g / m ² . Then, by driving in the entire support substrate with heating at 100?, After sufficient melt adhesive powder, and the average fineness of 0.03dtex, weight per unit charged polypropylene melt blown non-woven fabric laminated and integrated with a 30g / m ² To prepare an air filter filter material. Next, the air filter material was used to form a pleats-shaped air filter having a width of 275 mm, a height of 356 mm, a depth of 24 mm, and a pitch of 4.5 mm to prepare an air filter.

(Example 31)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbonded nonwoven fabric having a pincer strength of 170 mJ and a thickness of 0.5 mm was used as the sheet material.

(Example 32)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbonded nonwoven fabric having 240 mJ of the interfacial strength and 0.5 mm in thickness was used as the sheet material.

(Example 33)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbond nonwoven fabric having a pincer strength of 168 mJ and a thickness of 0.1 mm was used as a sheet-like material.

(Example 34)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbonded nonwoven fabric having a pincer strength of 168 mJ and a thickness of 1.0 mm was used as the sheet material.

(Example 35)

An air filter filter material and an air filter were prepared in the same manner as in Example 31 except that grapefruit seed extract was used as a natural extract component and the dry content thereof was 3 g / m ² .

(Example 36)

An air filter filter material and an air filter were produced in the same manner as in Example 31 except that the extract of Mulberry leaf extract was used as a natural extract component and the dry content thereof was 4 g / m ² .

(Example 37)

An air filter filter material and an air filter were produced in the same manner as in Example 31 except that the forage extract was used as a natural extract component and the dry content thereof was 4 g / m ² .

(Example 38)

An air filter filter material and an air filter were produced in the same manner as in Example 31 except that the shell calcined CaO was used as a natural extract component and the dry content thereof was 3 g / m ² .

(Comparative Example 11)

An air filter filter material and an air filter were obtained in the same manner as in Example 31 except that the natural extract component was not attached.

(Comparative Example 12)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbond nonwoven fabric having a pincer strength of 61 mJ and a thickness of 0.5 mm was used as the sheet-like material.

(Comparative Example 13)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbond nonwoven fabric having a pinched resistance of 280 mJ and a thickness of 0.5 mm was used as the sheet-like material.

(Comparative Example 14)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbond nonwoven fabric having a pinched resistance of 172 mJ and a thickness of 0.05 mm was used as a sheet-like material.

(Comparative Example 15)

An air filter filter material and an air filter were produced in the same manner as in Example 30 except that a polyester spunbond nonwoven fabric having a hardening strength of 168 mJ and a thickness of 1.5 mm was used as a sheet-like material.

The air filter media and air filters of the examples and comparative examples were evaluated according to the following evaluation methods, and the evaluation results are shown in Tables 1 to 3.

(Antibacterial test)

JIS L 1902: 2008 " Antimicrobial activity test method and antimicrobial activity of textile products " The test was carried out in accordance with the bacterial liquid absorption method, and the antimicrobial activity was judged by the value of the bacterium activity value. Bacteria used for the test were two types, Staphylococcus aureus and E. coli. The bacterium activity value of 2.2 or more was judged as " antimicrobial activity ", the bacterium activity value was less than 2.2, "

(stink)

After the air filter was cut into a size of 20 x 20 cm, a monitor test was conducted by five evaluators about the odor of the air filter at a distance of about 10 cm, and the average value was shown. Evaluation was carried out in the following three steps, and 2 or less was passed.

1: odorless

2: Barely detectable odor

3: Easily detectable

(Air filter structure change for long-term use)

The air filter was set in a humidifying air purifier (manufactured by Coway, product name: APM-1010DH), and after 90 days of operation, the "structure" of the air filter was visually evaluated. Evaluation was carried out in the following three steps, and 1 or less was passed. Two evaluators were evaluated and expressed as average values.

1: No change in air filter structure, good.

2: Wrinkles or air bubbles were generated in the air filter, but there is no problem in actual use.

3: Wrinkles, bubbles and cracks are strongly generated in the air filter, which is not suitable for use.

(Antimicrobial activity after long-term use)

The air filter was set in a humidifying air cleaner (trade name: APM-1010DH, product name: APM-1010DH), and after 90 days of operation, an air filter filter material was collected from the air filter and measured for antibacterial property of JIS L 1902: Antimicrobial activity test method and antimicrobial effect of the effect product " The test was carried out in accordance with the bacterial solution absorption method, and the antibacterial activity was judged by the value of the antibacterial activity value. Bacteria used for the test were two types, Staphylococcus aureus and E. coli. The bacterium activity value of 2.2 or more was judged as " antimicrobial activity ", the bacterium activity value was less than 2.2, "

(Odor after long-term use)

The air filter was set in a humidifying air cleaner (trade name: APM-1010DH, product name: APM-1010DH), and after 90 days of operation, the used air filter was cut into a size of 20 x 20 cm, , A monitor test was conducted by five evaluators, and the average value was shown. Evaluation was made in the following four steps, and 2 or less was passed.

1: odorless

2: Barely detectable odor

3: Easily detectable

4: Strong odor

From Examples 1 to 20 and Comparative Examples 1 to 5, it was confirmed that as the air filter material A to be subjected to pleating, the air filter material had an air permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 0.1 to 1.0 mm And the air filter formed by using the air filter media of Examples 1 to 20 in which the air permeable base material contains a natural extract component exhibited sufficient antibacterial property and the air filter having sufficient air permeability for a long time It can be seen that even if the influence of moisture in the air is used, there is no significant change in the structure of the air filter and the antibacterial property is maintained, and thus a clean air filter can be continuously used. It is also understood from Examples 2, 6 to 19 and Example 20 that when the natural extract component is at least one member selected from the group consisting of coffee bean extract, grapefruit seed extract, mugwort extract, fenugreek extract, and shell calcined CaO, It can be seen that even if it is used for a long time in a cleaner and influenced by moisture in the air, the air filter structure is hard to change.

From Examples 21 to 29 and Comparative Examples 6 to 10, it was confirmed that as the air filter medium material B in which pleating was not performed, the air filter medium had an air permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 1.0 to 15 mm The air filter material of Examples 21 to 29 in which the air permeable base material contains a natural extract component and the air filter formed by using the air filter filter material exhibited sufficient antibacterial properties, It can be seen that even if the influence of moisture in the air is used, there is no significant change in the structure of the air filter and the antibacterial property is maintained, and thus a clean air filter can be continuously used.

From Examples 30 to 38 and Comparative Examples 11 to 15, an air filter media in which a support substrate and a charging melt-blown nonwoven fabric or an electrification spunbond nonwoven fabric are laminated and integrated, the support substrate has an internal bonding strength of 65 to 250 mJ, , And air permeable base material having a thickness of 0.1 to 1.0 mm. The air filter formed by using the air filter media of Examples 30 to 38 in which the breathable base material contains a natural extract component and the air filter media , It shows sufficient antibacterial property and can be used continuously in a humidifying air purifier for a long period of time. Thus, even if it is influenced by moisture in the air, there is no great change in the air filter structure and antibacterial property is maintained. .

The air filter media and the air filter of the present invention can be used for various air treatment devices such as an air conditioner, an air purifier, a vacuum cleaner, a dehumidifier, a drier, a humidifier, a ventilating fan and a heat exchanger. The air filter material of the present invention may also be used for a humidifying element of a humidifier, a mask, a wet wiper, a floor wiper, and the like.

Claims (5)

Wherein the air filter medium comprises an air permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 0.1 to 1.0 mm, wherein the air permeable base material contains a natural extract component Wherein the air filter medium is made of a synthetic resin. Wherein the air filter medium comprises an air permeable base material having an internal bonding strength of 65 to 250 mJ and a thickness of 1.0 to 15 mm and wherein the air permeable base material contains a natural extract component Wherein the air filter medium is made of a synthetic resin. An air filter material in which a support substrate and a charging melt-blown nonwoven fabric or a charging and spunbond nonwoven fabric are laminated and integrated, wherein the support substrate contains a breathable substrate having an internal bonding strength of 65 to 250 mJ and a thickness of 0.1 to 1.0 mm Wherein the air permeable base material contains a natural extract component. The method according to any one of claims 1 to 3,
Wherein the natural extract component is at least one member selected from the group consisting of coffee bean extract, grapefruit seed extract, mugwort extract, fowl extract, and calcium oxide compound obtained by baking the shell. An air filter formed by using the air filter material according to any one of claims 1 to 4.