JPH11290623A - Filter medium - Google Patents
Filter mediumInfo
- Publication number
- JPH11290623A JPH11290623A JP9576798A JP9576798A JPH11290623A JP H11290623 A JPH11290623 A JP H11290623A JP 9576798 A JP9576798 A JP 9576798A JP 9576798 A JP9576798 A JP 9576798A JP H11290623 A JPH11290623 A JP H11290623A
- Authority
- JP
- Japan
- Prior art keywords
- water
- filter material
- absorbing material
- fiber
- pressure loss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 239000011358 absorbing material Substances 0.000 claims abstract description 14
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 5
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 4
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 4
- 229920000098 polyolefin Polymers 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 6
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- -1 polypropylene Polymers 0.000 abstract description 7
- 239000004743 Polypropylene Substances 0.000 abstract description 5
- 229920001155 polypropylene Polymers 0.000 abstract description 5
- 239000003365 glass fiber Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 abstract description 3
- 239000002759 woven fabric Substances 0.000 abstract description 3
- 239000004677 Nylon Substances 0.000 abstract description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 abstract description 2
- 229920001778 nylon Polymers 0.000 abstract description 2
- 229910002027 silica gel Inorganic materials 0.000 abstract description 2
- 239000000741 silica gel Substances 0.000 abstract description 2
- 229920002994 synthetic fiber Polymers 0.000 abstract description 2
- 239000012209 synthetic fiber Substances 0.000 abstract description 2
- 241000233866 Fungi Species 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 15
- 235000002639 sodium chloride Nutrition 0.000 description 15
- 239000011780 sodium chloride Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 7
- 239000011343 solid material Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 229920003071 Polyclar® Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気中のダストを
分離捕集するフィルター材に関するものであり、特に臨
海地区等の外気中に多く含まれる海塩粒子の除去に有効
なフィルター材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter material for separating and trapping dust in the air, and more particularly to a filter material effective for removing sea salt particles contained in the open air such as a seaside area. It is.
【０００２】[0002]
【従来の技術】従来、フィルター材としては、ガラス繊
維シート、織物、不織布などの多孔物やエレクトレット
加工した不織布などが使用されている。これらのフィル
ター材は、ジグザグ状にプリーツされた状態で枠内に納
められ、工場、オフィスビルなどの空調機に組み込まれ
て外気中の固体粒子を除去する。該フィルター材を外気
中に海塩粒子を多く含む臨海地区等で使用した場合、外
気の湿度が比較的低い状態では、海塩粒子は固体状態で
存在しているため容易に除去捕集することが可能であ
る。しかし、外気が高湿度である場合には、捕集された
海塩粒子が潮解し、フィルター材の表面に膜状となって
広がるため圧力損失の急上昇を招くと共にフィルター材
の下流側に潮解物が通過し、ダクトや室内機器に塩害を
もたらすという問題があった。2. Description of the Related Art Conventionally, porous materials such as glass fiber sheets, woven fabrics and nonwoven fabrics, and electret processed nonwoven fabrics have been used as filter materials. These filter materials are put in a frame in a state of being pleated in a zigzag shape, and are incorporated in an air conditioner of a factory, an office building or the like to remove solid particles in the outside air. When the filter material is used in a seaside area or the like that contains a lot of sea salt particles in the outside air, the sea salt particles exist in a solid state in a state where the humidity of the outside air is relatively low, so that they can be easily removed and collected. Is possible. However, when the outside air is at high humidity, the collected sea salt particles deliquesce and spread as a film on the surface of the filter material, causing a rapid rise in pressure loss and deliquescent on the downstream side of the filter material. Has passed, causing salt damage to ducts and indoor equipment.
【０００３】また、近年、特開平６−４７２１７号公報
に示されているとおり、撥水性を有する繊維層の上流側
に繊維の集合体よりなる吸水層を設置することにより、
繊維の集合体よりなる吸水層で潮解物を吸収保持し、撥
水性を有する繊維層で潮解物の下流側への通過を防止し
ようとした塩害防止フィルター材が考案されている。In recent years, as disclosed in Japanese Patent Application Laid-Open No. 6-47217, a water-absorbing layer made of an aggregate of fibers is provided upstream of a water-repellent fiber layer.
A salt damage preventing filter material has been devised in which a deliquescence is absorbed and retained by a water-absorbing layer composed of an aggregate of fibers, and the deliquescence is prevented from passing downstream by a water-repellent fiber layer.
【０００４】しかし、このような繊維の集合体を吸水層
として使用した場合、大気中に浮遊し該フィルター材で
捕集されたカビの胞子等が繊維の集合体に吸収された水
分により増殖し、不衛生であると共にフィルターユニッ
ト取り替え時等に周りに飛散するため作業者の環境悪
化、健康を損なう等問題があった。However, when such an aggregate of fibers is used as a water-absorbing layer, mold spores and the like floating in the air and collected by the filter material proliferate due to water absorbed by the aggregate of fibers. In addition, it is unsanitary and scatters around when the filter unit is replaced, so that there is a problem that the environment of the worker is deteriorated and the health is impaired.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、かかる問題
点を解決しようとするものであり、捕集した海塩粒子が
高湿度下で潮解した場合においても、圧力損失の上昇お
よび下流側への再飛散が少なく、また、カビ等の増殖を
少なくできるフィルター材を提供することを課題とす
る。SUMMARY OF THE INVENTION The present invention is intended to solve such a problem. Even if the collected sea salt particles deliquesce under high humidity, the pressure loss increases and the pressure drops to the downstream side. It is an object of the present invention to provide a filter material which can reduce the re-dispersion of mold and reduce the growth of mold and the like.
【０００６】[0006]
【課題を解決するための手段】本発明者は、かかる問題
点を解決すべく鋭意検討の結果、本発明に到達した。す
なわち、本発明は、繊維層と繊維層との層間に固形物よ
りなる吸水材を構成してなることを特徴とするフィルタ
ー材である。Means for Solving the Problems The present inventors have made intensive studies to solve the above problems, and have reached the present invention. That is, the present invention is a filter material characterized by comprising a water-absorbing material made of a solid material between the fiber layers.
【０００７】[0007]
【発明の実施の形態】以下に、本発明を更に詳しく説明
する。本発明における繊維層は、織布、不織布等シート
形態を有しているものをいい、素材は、ポリエステル、
ポリプロピレン、ナイロン、ポリ塩化ビニル、アクリロ
ニトリル、ポリクラール、ポリエチレン等の合成繊維や
ガラス繊維を単独または混合して形成できる。また、繊
維層の少なくとも１層は、潮解物の下流側への通過を防
止するため撥水性を有していることが好ましく、ポリオ
レフィン系が好ましい。更に、フィルターとしての粉塵
捕捉性能があることが好ましく、低圧損でかつ高捕集効
率であるエレクトレットメルトブロー不織布が好まし
い。また、繊維層の厚みは、１０〜５００μｍが好まし
く使用される。１０μｍより薄いとフィルターとしての
粉塵捕捉性能が低くなり、また、５００μｍより厚くな
るとジグザク状にプリーツした状態で枠に納められる際
に、収納面積が小さくなる問題がある。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. The fiber layer in the present invention refers to those having a sheet form such as woven fabric and nonwoven fabric, and the material is polyester,
It can be formed of a synthetic fiber such as polypropylene, nylon, polyvinyl chloride, acrylonitrile, polyclar, polyethylene, etc., or a glass fiber alone or as a mixture. In addition, at least one of the fiber layers preferably has water repellency in order to prevent the deliquescent from passing downstream, and is preferably a polyolefin-based material. Further, it is preferable that the filter has a dust capturing performance, and an electret melt blown nonwoven fabric having a low pressure loss and a high collecting efficiency is preferable. The thickness of the fiber layer is preferably from 10 to 500 μm. When the thickness is less than 10 μm, the dust capturing performance of the filter is reduced. When the thickness is more than 500 μm, there is a problem that the storage area becomes small when the filter is put in a zigzag shape in a frame.
【０００８】このように繊維層が形成され、本発明によ
れば、繊維層と繊維層との層間に固形物よりなる吸水材
が狭持される。According to the present invention, the fiber layer is formed, and the water-absorbing material made of a solid material is held between the fiber layers.
【０００９】本発明における固形物よりなる吸水材は、
デンプン系、セルロース等の天然高分子類、ポリビニル
アルコール系、アクリル系、ポリエーテル系等の合成高
分子類あるいは酸化ケイ素（シリカゲル）、塩化コバル
ト等の無機化合物等を使用することが出来るが、無機化
合物は、吸水時の膨潤、潮解による圧力損失等フィルタ
ー性能に及ぼす影響が少なく、好ましく使用できる。特
に、無機化合物である酸化ケイ素は、吸放湿性能を持ち
繰り返し使用でき、吸水時に表面が乾いているためカビ
等の発生がない等の特徴を持っているため好ましい。In the present invention, the water-absorbing material composed of a solid is
Natural polymers such as starch and cellulose, synthetic polymers such as polyvinyl alcohol, acrylic and polyether, or inorganic compounds such as silicon oxide (silica gel) and cobalt chloride can be used. The compound has little effect on filter performance such as swelling upon absorption of water and pressure loss due to deliquescence, and can be preferably used. In particular, silicon oxide, which is an inorganic compound, is preferable because it has characteristics such as moisture absorption and desorption properties, and it can be used repeatedly, and its surface is dry when absorbing water, so that there is no generation of mold and the like.
【００１０】また、固形物よりなる吸水材の平均粒径
は、繊維層のポアサイズの最小値よりも大きいと、繊維
層間に吸水材が確実に挟持され、繊維層の内部および外
部に漏れ出る量が少なくなるため好ましい。吸水材の平
均粒径が、繊維層のポアサイズの最小値より小さいと、
繊維層間に挟持した吸水材が、繊維層を通過し漏れ出る
ことがあるため好ましくない。If the average particle size of the solid water-absorbing material is larger than the minimum value of the pore size of the fiber layer, the water-absorbing material is reliably sandwiched between the fiber layers, and the amount of the material leaking into and out of the fiber layer. Is preferred because the amount of If the average particle size of the water-absorbing material is smaller than the minimum value of the pore size of the fiber layer,
The water-absorbing material sandwiched between the fiber layers is not preferable because it may pass through the fiber layer and leak.
【００１１】以上のように構成されたフィルター材は、
空気中のダストを効率良く分離捕集し、特に臨海地区等
の外気中に多く含まれる海塩粒子の除去に有効であり、
捕集した海塩粒子が高湿度下において潮解した場合にお
いても、固形物よりなる吸水材により潮解物が吸収さ
れ、シート上に水膜が形成されることがなく、しかも吸
水材は吸水後の膨潤、潮解およびカビ等の発生がなく、
圧力損失の急上昇を引き起こすことがない。The filter material configured as described above is
Efficiently separates and collects dust in the air, and is particularly effective in removing sea salt particles contained in the open air such as seaside areas.
Even when the collected sea salt particles deliquesce under high humidity, the deliquescent material is absorbed by the water-absorbing material made of solid material, and no water film is formed on the sheet. No swelling, deliquescence, mold, etc.
It does not cause a sudden rise in pressure loss.
【００１２】[0012]
【実施例】実施例１ 目付が４０ｇ／ｍ2 、平均繊維径が２．３μｍであるポ
リプロピレンエレクトレットメルトブロー不織布と、目
付が９０ｇ／ｍ2 、平均繊維系が１５ｄ、４ｄのポリエ
ステル系熱接着繊維を混合比６：４で混合しカーディン
グ法で得たウエッブを熱プレスロールでシート化した短
繊維不織布の層間に、粒径３０〜８０メッシュの酸化ケ
イ素付与し、超音波ウエルダー（０．５インチダイヤ
型）で積層一体化しフィルター材を得た。Example 1 A polypropylene electret meltblown nonwoven fabric having a basis weight of 40 g / m 2 and an average fiber diameter of 2.3 μm, and a polyester-based heat-bonded fiber having a basis weight of 90 g / m 2 and an average fiber type of 15d and 4d were used. A web mixed with a mixing ratio of 6: 4 and obtained by a carding method is provided with silicon oxide having a particle size of 30 to 80 mesh between layers of short fiber nonwoven fabric formed into sheets by a hot press roll, and an ultrasonic welder (0.5 inch) (Diamond type) to obtain a filter material.
【００１３】比較例１ 実施例１と同じポリプロピレンメルトブロー不織布、短
繊維不織布を実施例１と同じ超音波ウエルダーで積層一
体化しフィルター材を得た。Comparative Example 1 The same polypropylene melt blown nonwoven fabric and short fiber nonwoven fabric as in Example 1 were laminated and integrated with the same ultrasonic welder as in Example 1 to obtain a filter material.
【００１４】比較例２ 実施例１と同じポリプロピレンエレクトレットメルトブ
ロー不織布と短繊維不織布の層間に目付が６５ｇ／
ｍ2 、ＪＩＳ−Ｌ−１０９６「一般織物試験法」６．２
６．２法にて測定した吸水率が１１０％のセルロース１
００％のスパンレース不織布をホットメルト接着シート
にて貼り合わせしフィルター材を得た。COMPARATIVE EXAMPLE 2 Same as in Example 1 except that the basis weight between the layers of the polypropylene electret meltblown nonwoven fabric and the short fiber nonwoven fabric was 65 g /
m 2 , JIS-L-1096 “General textile test method” 6.2
Cellulose 1 having a water absorption of 110% as measured by the 6.2 method
A spunlace nonwoven fabric of 00% was bonded with a hot melt adhesive sheet to obtain a filter material.
【００１５】実施例１および比較例１、２で得られたフ
ィルター材を直径７ｃｍの円状に切り抜いた後、乾燥重
量を測定し「初期重量Ａ」とした。十分乾燥させ４００
メッシュのフルイを通過させたＮａＣｌ粒子を１５０ｇ
／ｍ2 付着させた後、乾燥重量を測定し「付着後重量
Ｂ」とした。温度２０℃、湿度９０％に調節した恒温恒
湿機内に図１に示したフィルター性能試験装置を投入
し、フィルター材をサンプルホルダー１に取り付け送風
機２により通過風速５ｍ／分になるように調節した後、
５時間経過するまでの圧力損失を一定時間毎に圧力損失
計３で測定した。また、５時間経過した後、フィルター
材を取り出し乾燥重量を測定し「潮解後重量Ｃ」とし
た。次式により「ＮａＣｌ再飛散率」を求めた。 ＮａＣｌ再飛散率（％）＝（１−（Ｃ−Ａ）／（Ｂ−
Ａ））×１００After the filter materials obtained in Example 1 and Comparative Examples 1 and 2 were cut out into a circle having a diameter of 7 cm, the dry weight was measured and defined as "initial weight A". Dry thoroughly 400
150 g of NaCl particles passed through a mesh sieve
/ M 2 , and the dry weight was measured and defined as “weight after adhesion B”. The filter performance test apparatus shown in FIG. 1 was put into a thermo-hygrostat adjusted to a temperature of 20 ° C. and a humidity of 90%, and the filter material was attached to the sample holder 1 and adjusted by the blower 2 so that the passing air velocity was 5 m / min. rear,
The pressure loss until 5 hours passed was measured by the pressure loss meter 3 at regular intervals. After 5 hours, the filter material was taken out, the dry weight was measured, and the result was defined as "weight after deliquescent C". The “NaCl re-emission rate” was determined by the following equation. NaCl re-emission rate (%) = (1- (CA) / (B-
A)) × 100
【００１６】また、実施例１および比較例１、２で得ら
れたフィルター材を、ジグザグ状にプリーツし、枠内に
納め作製したフィルターユニットを臨海地区のビル空調
機に設置し、６ケ月後のカビの発生状態を目視により観
察した。Further, the filter material obtained in Example 1 and Comparative Examples 1 and 2 was pleated in a zigzag shape, and the filter unit prepared in a frame was set in a building air conditioner in a seaside area, and after 6 months. Of the mold was visually observed.
【００１７】通風後の経過時間と圧力損失との関係を図
２に示す。本発明で得られたフィルター材（実施例１）
は、比較例１に比べ圧力損失の上昇が小さいことがわか
る。ＮａＣｌ再飛散率およびカビの発生状態を表１に示
す。FIG. 2 shows the relationship between the elapsed time after the ventilation and the pressure loss. Filter material obtained in the present invention (Example 1)
It can be seen that the rise of pressure loss is smaller than that of Comparative Example 1. Table 1 shows the NaCl re-scattering rate and the mold generation state.
【００１８】[0018]
【表１】 [Table 1]
【００１９】本発明で得られたフィルター材（実施例
１）は、塩害防止を目的とした比較例１に比べカビの発
生がなく、塩害防止対策を施してない比較例２に比べＮ
ａＣｌ再飛散率が小さいことがわかる。The filter material obtained in the present invention (Example 1) has no mold generation as compared with Comparative Example 1 for the purpose of preventing salt damage, and has a lower N than that of Comparative Example 2 which has not been subjected to the salt damage prevention measures.
It can be seen that the aCl re-scattering rate is small.
【００２０】[0020]
【発明の効果】以上説明したように、本発明のフィルタ
ー材は、繊維層と繊維層との層間に固形物よりなる吸水
材を構成しているため、潮解物が固形物よりなる吸水材
により効率よく吸収され、圧力損失の急上昇を引き起こ
すことがなく、しかもカビ等の発生がないフィルター材
を提供するものである。As described above, in the filter material of the present invention, since the water absorbent made of a solid material is formed between the fiber layers, the deliquescent material is formed by the water absorbent material made of the solid material. An object of the present invention is to provide a filter material that is efficiently absorbed, does not cause a sudden rise in pressure loss, and does not generate mold or the like.
【図１】 フィルター性能試験装置の概略図である。FIG. 1 is a schematic diagram of a filter performance test apparatus.
【図２】 実施例における高湿度空気を通風後の経過時
間と圧力損失の関係図である。FIG. 2 is a diagram illustrating a relationship between elapsed time after passage of high-humidity air and pressure loss in the example.
１ サンプルフォルダー ２ 送風機 ３ 圧力損失計 1 Sample folder 2 Blower 3 Pressure drop gauge
Claims (7)
材を狭持してなることを特徴とするフィルター材。1. A filter material comprising a solid water-absorbing material sandwiched between fiber layers.
ン系不織布であることを特徴とする請求項１記載のフィ
ルター材。2. The filter material according to claim 1, wherein at least one of the fiber layers is a polyolefin-based nonwoven fabric.
がメルトブロー不織布であることを特徴とするフィルタ
ー材。3. A filter material, wherein the polyolefin-based nonwoven fabric according to claim 2 is a meltblown nonwoven fabric.
レクトレット加工されていることを特徴とするフィルタ
ー材。4. A filter material, wherein the meltblown nonwoven fabric according to claim 3 is electret-processed.
する請求項１〜４いずれかの記載のフィルター材。5. The filter material according to claim 1, wherein the water-absorbing material is an inorganic compound.
する請求項１〜４いずれかの記載のフィルター材。6. The filter material according to claim 1, wherein the water-absorbing material is silicon oxide.
項１〜６いずれかのフィルター材。7. The filter material according to claim 1, which is used for preventing salt damage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9576798A JPH11290623A (en) | 1998-04-08 | 1998-04-08 | Filter medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9576798A JPH11290623A (en) | 1998-04-08 | 1998-04-08 | Filter medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11290623A true JPH11290623A (en) | 1999-10-26 |
Family
ID=14146648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9576798A Pending JPH11290623A (en) | 1998-04-08 | 1998-04-08 | Filter medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11290623A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444885B1 (en) * | 2001-02-28 | 2004-08-18 | 주식회사 코캣 | Cleaning method of particles and moisture contained in the exhaust gas |
| JP2021162430A (en) * | 2020-03-31 | 2021-10-11 | 太平電業株式会社 | Decontamination agent |
| WO2022168982A1 (en) * | 2021-02-08 | 2022-08-11 | 東洋紡株式会社 | Filtering material for filter, and filter |
-
1998
- 1998-04-08 JP JP9576798A patent/JPH11290623A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444885B1 (en) * | 2001-02-28 | 2004-08-18 | 주식회사 코캣 | Cleaning method of particles and moisture contained in the exhaust gas |
| JP2021162430A (en) * | 2020-03-31 | 2021-10-11 | 太平電業株式会社 | Decontamination agent |
| WO2022168982A1 (en) * | 2021-02-08 | 2022-08-11 | 東洋紡株式会社 | Filtering material for filter, and filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3259782B2 (en) | Filter media for air purification | |
| US8034146B2 (en) | Filter element, method of manufacture and use | |
| US9656196B2 (en) | Filter material for air filter, method for manufacturing same, and air filter provided with same | |
| US6322615B1 (en) | High efficiency permanent air filter and method of manufacture | |
| TWI598146B (en) | Air filter with sorbent particles | |
| KR101463638B1 (en) | Filter element and filter unit | |
| JP2004089982A (en) | Air purifying filter | |
| JP2000070646A (en) | Air purification filter member | |
| JP2015183327A (en) | Melt-blown nonwoven fabric and composite filter medium | |
| JP5712598B2 (en) | Air filter media and air filter | |
| US20210016213A1 (en) | Wet non-woven fabric for filter, filter medium for filter, and filter | |
| JP6076077B2 (en) | air filter | |
| CN109648958B (en) | Composite non-woven fabric and preparation method and application thereof | |
| JP3968613B2 (en) | Air filter media and air filter | |
| JP2004082109A (en) | Air filtering filter medium | |
| JPH11290623A (en) | Filter medium | |
| JP3675686B2 (en) | Air cleaning filter | |
| JP3164159B2 (en) | Electret air filter for removing sea salt particles | |
| JP2004243233A (en) | Biodegradable filtering material | |
| JP2019166513A (en) | Dust collection deodorizing filter material and dust collection deodorizing filter | |
| JP4470079B2 (en) | Air purification filter | |
| JP3767722B2 (en) | Adsorbent sheet and air purification filter | |
| WO2020230760A1 (en) | Filter material for filter, and filter | |
| JP4538728B2 (en) | Filter material and sock filter for UV resistant air conditioning filter | |
| JP7422576B2 (en) | Filter medium, filter element, and method for manufacturing filter medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050328 |
|
| A621 | Written request for application examination |
Effective date: 20050328 Free format text: JAPANESE INTERMEDIATE CODE: A621 |
|
| A977 | Report on retrieval |
Effective date: 20061013 Free format text: JAPANESE INTERMEDIATE CODE: A971007 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061024 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20070515 |