JP2006116522A - Filter element - Google Patents

Filter element Download PDF

Info

Publication number
JP2006116522A
JP2006116522A JP2005064733A JP2005064733A JP2006116522A JP 2006116522 A JP2006116522 A JP 2006116522A JP 2005064733 A JP2005064733 A JP 2005064733A JP 2005064733 A JP2005064733 A JP 2005064733A JP 2006116522 A JP2006116522 A JP 2006116522A
Authority
JP
Japan
Prior art keywords
filter element
filter
end shape
downstream
bending resistance
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.)
Granted
Application number
JP2005064733A
Other languages
Japanese (ja)
Other versions
JP4627447B2 (en
Inventor
Koji Imai
孝次 今井
Koji Okuyama
浩嗣 奥山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Vilene Co Ltd
Original Assignee
Japan Vilene Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Vilene Co Ltd filed Critical Japan Vilene Co Ltd
Priority to JP2005064733A priority Critical patent/JP4627447B2/en
Publication of JP2006116522A publication Critical patent/JP2006116522A/en
Application granted granted Critical
Publication of JP4627447B2 publication Critical patent/JP4627447B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter element capable of easily inserting into an attachment frame with a curved air inflow surface without resistance, without being bent or coming off from a pawl of the attachment frame, and preventing the production efficiency from lowering. <P>SOLUTION: This filter element is formed by joining end part shape-retaining materials on both ends of a filter medium in the direction crossing to pleat lines of the medium having a plurality of pleats. A surface of connecting the pleat lines on a downstream side is made a downstream surface of the filter element. In a state of making the downstream surface up or down, when applying a load of 20 g per 1 cm<SP>2</SP>to the whole part including the distance from the tip to 1 cm in the direction orthogonal to the pleat lines, the bending resistance in the direction orthogonal to the pleat lines is 150 mm or less upon measurement of 45 degrees in a cantilever method. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、車両の空気取り入れ口、室内の空気取り入れ口、あるいは掃除機などの機器の空気取り入れ口などに設置された取付け枠に挿入して使用される、多数のひだが形成されたフィルタエレメントに関する。   The present invention relates to a filter element having a large number of pleats that is used by being inserted into a mounting frame installed in an air intake port of a vehicle, an indoor air intake port, or an air intake port of a device such as a vacuum cleaner. About.

従来から、車両の空気取り入れ口、室内の空気取り入れ口、あるいは掃除機などの機器の空気取り入れ口などには、例えば特開２００１−４６８２４号公報に開示されるように、入口に導入される空気中の塵埃を除去するための図５に示されるフィルタエレメント（２０）が剛性のある矩形状の取付け枠（３０）に挿入されて設置されている。このフィルタエレメントは濾材に多数のひだが形成されており、そのひだの山線に交差する方向の両端面には、ひだの形状を保つための端部保形材（４２）が固着されている。この端部保形材にはフィルタエレメント全体を補強する目的もあり、その保形と補強の効果を高めるため剛性のある材料が用いられており、フィルタエレメント全体も剛性のある構造となっていた。   Conventionally, air introduced into an inlet as disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-46824 is used as an air intake of a vehicle, an indoor air intake, or an air intake of a device such as a vacuum cleaner. The filter element (20) shown in FIG. 5 for removing dust inside is inserted and installed in a rigid rectangular mounting frame (30). The filter element has a large number of pleats formed on the filter medium, and end shape retaining materials (42) for maintaining the shape of the folds are fixed to both end faces in the direction intersecting the ridge line of the folds. . This end shape retaining material also has the purpose of reinforcing the entire filter element, and a rigid material is used to enhance the shape retaining and reinforcing effect, and the entire filter element also has a rigid structure. .

しかし、近年車両や室内のより快適な居住性が追求される中で、フィルタエレメントを限られた狭い空間に取り付けたり、コーナーなどの特殊な場所に取り付けたり、デザイン性に富んだ形状が要求されており、このため、例えば図１（ｃ）に示すように、取付け枠の空気流入面が平面でなく曲面となった形状、あるいは湾曲した形状が要求されている。しかし、このような曲面を有する取付け枠に前述の剛性のあるフィルタエレメントを挿入しようとすると、フィルタエレメントの端部保形材が折れ曲がってエアリークが発生するという問題があった。なお、特開平１０−３２８５１７号公報には、図６に示されるように、端部保形材が湾曲可能な部材（１２ｂ）でできておりその弾性力によってフィルタエレメント（１２）を取付け枠（１１）に気密に装着する構造のフィルタエレメントが開示されている。しかし、このようなフィルタエレメントを上述の曲面を有するフィルタ枠に装着しようとすると、そのフィルタエレメントを押圧しながらフィルタ枠に装着することとなり、その結果フィルタエレメントの両端又は中央部が浮き上がり、フィルタエレメントを押えるフィルタ枠の爪から外れるなど、フィルタ枠に非常に装着し難いという問題があり、やはりエアリークが発生するという問題があった。また、このような問題に対処すべく、端部保形材を予め湾曲した扇形状にカットしてから濾材端部に固着しようとすると、その分手間がかかり、また各種デザインによってその都度打ち抜きの刃型を準備しなければならず生産効率に劣り、コスト上昇の問題があった。   However, in recent years, more comfortable living in vehicles and rooms has been pursued, and filter elements can be installed in a limited narrow space, or installed in special places such as corners, and shapes that are rich in design are required. For this reason, for example, as shown in FIG. 1C, a shape in which the air inflow surface of the mounting frame is not a flat surface but a curved surface, or a curved shape is required. However, when the above-mentioned rigid filter element is inserted into the mounting frame having such a curved surface, there is a problem that the end shape retaining material of the filter element is bent and air leakage occurs. In Japanese Patent Laid-Open No. 10-328517, as shown in FIG. 6, the end shape retainer is made of a bendable member (12b), and the filter element (12) is attached to the mounting frame (12b) by its elastic force. 11) discloses a filter element having a structure for airtight mounting. However, if such a filter element is to be attached to the filter frame having the curved surface, the filter element is attached to the filter frame while pressing the filter element, and as a result, both ends or the center of the filter element are lifted, and the filter element There is a problem that the filter frame is very difficult to attach to the filter frame, such as coming off from the nail of the filter frame that presses, and there is also a problem that air leakage occurs. In addition, in order to cope with such problems, if the end shape retainer is cut into a curved fan shape in advance and then fixed to the end of the filter medium, it will take time, and various designs may be punched each time. The blade mold had to be prepared, resulting in poor production efficiency and increased costs.

特開２００１−４６８２４号公報JP 2001-46824 A 特開平１０−３２８５１７号公報Japanese Patent Laid-Open No. 10-328517

本発明は、上記の問題を解決し、空気流入面が曲面である取付け枠にも容易に抵抗なく挿入が可能であり、折れ曲がったり取付け枠の爪から外れたりすることがなく、しかも生産効率も低下することのないフィルタエレメントを提供することを課題とする。   The present invention solves the above-mentioned problems, and can be easily inserted into a mounting frame having a curved air inflow surface without resistance, and is not bent or detached from the claw of the mounting frame, and the production efficiency is also improved. It is an object to provide a filter element that does not decrease.

本発明のフィルタエレメントに係る解決手段は、図１（ａ）、（ｂ）に例示するように、多数のひだを有する濾材（２）のひだ山線（４）と交差する方向の濾材両端部に端部保形材（３）が接合されてなるフィルタエレメント（１）であって、下流側のひだ山線を結ぶ面を前記フィルタエレメントの下流面とすると、図３に示すように、下流面を上または下にした状態において、ひだ山線と直交する方向の先端から１ｃｍまでの部分全体に１ｃｍ２あたり２０ｇの荷重を載せた場合、ひだ山線と直交する方向の剛軟度が、ＪＩＳ Ｌ１０９６−１９９９（一般織物試験方法）に規定される、剛軟性８．１９．１Ａ法（４５度カンチレバー法）にて測定すると１５０ｍｍ以下であることを特徴とするフィルタエレメントである。なお、剛軟度は、試験片の寸法を、図１（ａ）に示すようにフィルタエレメント（１）の巾Ｗ（ｃｍ）×長さＬ（ｃｍ）として測定した値とする。また、フィルタエレメントの長さ（ｃｍ）が剛軟度の値よりも小さく、剛軟度の値を測定することができない場合は、長さ方向にフィルタエレメントを２個以上接合して、フィルタエレメントの長さをＬ（ｃｍ）×ｎ倍として測定した値を用いるか、或いはフィルタエレメントの長さＬ（ｍｍ）以上と表すことができる。 As shown in FIGS. 1 (a) and 1 (b), the solution means according to the filter element of the present invention includes both ends of the filter medium in the direction intersecting the pleat line (4) of the filter medium (2) having a large number of pleats. 3 is a filter element (1) formed by joining an end shape-retaining material (3) to a downstream surface of the filter element. In the state where the surface is up or down, when a load of 20 g per 1 cm 2 is put on the entire portion from the tip in the direction perpendicular to the pleat line to 1 cm, the bending resistance in the direction perpendicular to the pleat line is It is a filter element characterized in that it is 150 mm or less when measured by the stiffness / softness 8.19.1A method (45 degree cantilever method) defined in JIS L1096-1999 (general woven fabric test method). The bending resistance is a value obtained by measuring the dimension of the test piece as width W (cm) × length L (cm) of the filter element (1) as shown in FIG. If the length (cm) of the filter element is smaller than the bending resistance value and the bending resistance value cannot be measured, two or more filtering elements are joined in the length direction, and the filtering element Can be expressed as L (cm) × n times or the length of the filter element L (mm) or more.

本発明によって、空気流入面が曲面である取付け枠にも容易に抵抗なく挿入が可能であり、折れ曲がったり取付け枠の爪から外れたりすることがなく、しかも生産効率も低下することのないフィルタエレメントを提供することが可能となった。   According to the present invention, a filter element that can be easily inserted into a mounting frame having a curved air inflow surface without resistance, is not bent or detached from a claw of the mounting frame, and does not deteriorate the production efficiency. It became possible to provide.

以下、本発明に係るフィルタエレメントの好ましい実施の形態について詳細に説明する。   Hereinafter, preferred embodiments of the filter element according to the present invention will be described in detail.

本発明に適用できる濾材としては、ひだ折りが可能な濾材である限り特に限定されず、例えば不織布、折り編物、または紙などが可能であり、特に、平均繊維径が１０μｍ以下のメルトブロー不織布又は極細ガラス繊維不織布と、平均繊維径が１０μｍを超える繊維からなる補強用の不織布とを積層した質量法、比色法又は計数法で評価される複合不織布が好適に適用できる。   The filter medium applicable to the present invention is not particularly limited as long as it is a filter medium that can be fold-folded. For example, a nonwoven fabric, a folded knitted fabric, or paper can be used, and in particular, a melt blown nonwoven fabric having an average fiber diameter of 10 μm or less or ultrafine A composite nonwoven fabric evaluated by a mass method, a colorimetric method or a counting method in which a glass fiber nonwoven fabric and a reinforcing nonwoven fabric composed of fibers having an average fiber diameter exceeding 10 μm are laminated can be suitably applied.

前記メルトブロー不織布の材質、極細ガラス繊維不織布或いは補強用の不織布の材質は特に限定されず、ポリエチレンテレフタレート、ポリブチレンテレフタレートなどのポリエステル系繊維、ナイロン６、ナイロン６６などのポリアミド系繊維、ポリプロピレン、ポリエチレンなどのポリオレフィン系繊維、ポリアクリロニトリルなどのアクリル系繊維、ポリビニルアルコール繊維および合成パルプなどの合成繊維に限らず、レーヨンなどの半合成繊維、綿およびパルプ繊維などの天然繊維、あるいはガラス繊維、セラミックス繊維、金属繊維などを単独で、又は適宜組み合わせて適用することができる。   The material of the melt blown nonwoven fabric, the material of the ultrafine glass fiber nonwoven fabric or the reinforcing nonwoven fabric is not particularly limited. Polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, polyamide fibers such as nylon 6 and nylon 66, polypropylene, polyethylene, etc. Polyolefin fibers, acrylic fibers such as polyacrylonitrile, synthetic fibers such as polyvinyl alcohol fibers and synthetic pulp, semi-synthetic fibers such as rayon, natural fibers such as cotton and pulp fibers, or glass fibers, ceramic fibers, Metal fibers or the like can be applied alone or in appropriate combination.

前記補強用の不織布としては、例えばバインダ接着不織布、水流絡合不織布、ニードルパンチ不織布、繊維融着不織布、スパンボンド不織布、或いは紙などを単独で、又は適宜組み合わせた不織布を適用することができる。また、前記メルトブロー不織布の繊維径は１０μｍ以下であることが好ましく、５μｍ以下がより好ましく、３μｍ以下が更に好ましい。   As the reinforcing non-woven fabric, for example, a binder-bonded non-woven fabric, a hydroentangled non-woven fabric, a needle punched non-woven fabric, a fiber-bonded non-woven fabric, a spunbonded non-woven fabric, or a non-woven fabric in which paper is appropriately combined can be applied. The fiber diameter of the melt blown nonwoven fabric is preferably 10 μm or less, more preferably 5 μm or less, and even more preferably 3 μm or less.

前記濾材としては、廃棄物処理あるいは無機繊維の飛散による影響の観点から、有機素材が好ましく、特にメルトブロー不織布と有機繊維からなる補強用の不織布との複合不織布であることが好ましく、この複合不織布に更にエレクトレット加工などの後加工を施した濾材は濾過性能がより優れているためより好適に使用できる。   The filter medium is preferably an organic material from the viewpoint of the effect of waste treatment or scattering of inorganic fibers, and particularly preferably a composite nonwoven fabric of a melt blown nonwoven fabric and a reinforcing nonwoven fabric composed of organic fibers. Furthermore, a filter medium that has been subjected to post-processing such as electret processing can be used more suitably because of its superior filtration performance.

前記濾材は多数のひだが折られているが、この折り加工方法としてはレシプロ式やロータリー式などのプリーツ加工機による方法や、ジグザグ形状に成形された押型でプレスする方法などがある。また、折り加工された濾材の隣接する折り壁が線状の樹脂固形物によって分離されていることも可能であり、この樹脂固形物としては、例えば、発泡又は無発泡ホットメルト樹脂やウレタン樹脂などを使用できる。この樹脂固形物は、濾材の補強としての効果もあり、濾材の折り壁を横切るように連続的に、又は不連続的に塗布して形成することができる。なお、この樹脂固形物は処理流体の流入側及び／又は流出側に設けることができる。   The filter medium is folded in a large number of pleats, and examples of the folding method include a method using a pleating machine such as a reciprocating type and a rotary type, and a method of pressing with a pressing die formed in a zigzag shape. In addition, adjacent folded walls of the folded filter medium can be separated by a linear resin solid. Examples of the resin solid include foamed or non-foamed hot melt resin and urethane resin. Can be used. This resin solid substance also has an effect of reinforcing the filter medium, and can be formed by continuously or discontinuously applying so as to cross the folding wall of the filter medium. In addition, this resin solid substance can be provided in the inflow side and / or outflow side of a processing fluid.

前記濾材には、図１（ａ）に例示するように、多数のひだが形成されており、前記ひだの高さは５〜６０ｍｍが好ましく、８〜２５ｍｍがより好ましい。また、ひだのピッチは１〜１５ｍｍが好ましく、２〜１０ｍｍがより好ましい。   As illustrated in FIG. 1A, the filter medium is formed with a large number of pleats, and the height of the pleats is preferably 5 to 60 mm, and more preferably 8 to 25 mm. Moreover, 1-15 mm is preferable and, as for the pitch of a pleat, 2-10 mm is more preferable.

また、本発明では図１（ａ）に例示するように、前記濾材（２）のひだ山線（４）と交差する方向の濾材両端部に端部保形材（３）が接合されている。この端部保形材は、ひだの形状を保つ効果と、フィルタエレメント（１）全体を補強する効果とを有するものであり、端部保形材に用いる基材そのものを用いることも可能であるが、好ましくは端部保形材に用いる基材に接着剤または接着性のシートが付着した複合材を用いることができる。このような端部保形材が濾材の前記両端部に接合されているが、その接合方法としては、例えばホットメルト樹脂シートを予め前記端部保形材用の基材と貼り合わせた複合材からなる端部保形材を加熱処理によって濾材の前記両端部と接合する方法が適用できる。また、例えば端部保形材に用いる基材そのものを端部保形材として、この端部保形材にホットメルト樹脂シートを積層して、濾材の前記両端部に接触させながら加熱処理を行い、接合する方法が適用できる。   Further, in the present invention, as illustrated in FIG. 1A, end shape retainers (3) are joined to both ends of the filter medium in the direction intersecting with the pleat line (4) of the filter medium (2). . This end shape retaining material has the effect of maintaining the shape of the folds and the effect of reinforcing the entire filter element (1), and the base material itself used for the end shape retaining material can also be used. However, it is preferable to use a composite material in which an adhesive or an adhesive sheet is attached to a base material used for an end shape shaper. Such an end shape-retaining material is joined to the both end portions of the filter medium. As a joining method, for example, a composite material in which a hot-melt resin sheet is bonded in advance to the base material for the end shape-retaining material. A method of joining the end shape-retaining material made of the above to the both end portions of the filter medium by heat treatment can be applied. In addition, for example, the base material itself used for the end shape retaining material is used as the end shape retaining material, and a hot melt resin sheet is laminated on the end shape retaining material, and heat treatment is performed while contacting the both end portions of the filter medium. The method of joining can be applied.

前記端部保形材に用いる基材としては、柔軟性のある素材である限り特に限定されないが、後ほど加熱処理により濾材両端部に接合することを考慮すると、耐熱性に劣るスポンジなどよりは耐熱性に優れる例えば不織布または織編物が好適に適用できる。特に不織布であれば、ある程度の強度を保ちながら、厚さも嵩高となりクッション性を有するので、フィルタエレメントと取付け枠との気密性に優れるので、より好適に適用できる。なお、端部保形材用基材が、繊維がニードルパンチあるいは高圧水流によって絡合された不織布であれば、伸縮性に富んだ特性が付与されるのでさらに好ましい。また、この絡合された不織布において接着剤によって繊維同士がさらに結合した不織布からなる端部保形材用基材はフィルタエレメントの保形性をより高めることができるのでさらに好ましい。   The base material used for the end shape retaining material is not particularly limited as long as it is a flexible material. However, considering that it will be joined to both ends of the filter medium by heat treatment later, it is more heat resistant than a sponge having poor heat resistance. For example, a nonwoven fabric or a woven or knitted fabric having excellent properties can be suitably applied. In particular, a non-woven fabric can be more suitably applied because it has a high bulkiness and cushioning properties while maintaining a certain level of strength, and is excellent in airtightness between the filter element and the mounting frame. In addition, if the base material for an end shape shaper is a nonwoven fabric in which the fibers are entangled by a needle punch or a high-pressure water flow, it is more preferable because the properties rich in stretchability are imparted. Moreover, since the entangled nonwoven fabric is made of a nonwoven fabric in which fibers are further bonded to each other by an adhesive, the shape-retaining material base material is more preferable because the shape retention of the filter element can be further improved.

前記端部保形材の長手方向の引張強度はＪＩＳ Ｌ１０９６−１９９９（一般織物試験方法）に規定される、８．１２．１Ａ法（ストリップ法）にて測定すると１０〜３５０Ｎ／５ｃｍであることが好ましく、１５〜３００Ｎ／５ｃｍであることがより好ましい。１０Ｎ／５ｃｍ未満であるとフィルタエレメントの保形ができなくなる場合があり、３５０Ｎ／５ｃｍを超えると、曲面である取付け枠に容易に抵抗なく挿入することが困難になる場合がある。また、前記端部保形材の長手方向の１０％伸長時の引張強度は１００Ｎ／５ｃｍ未満であることが好ましく、７０Ｎ／５ｃｍ未満であることがより好ましい。１００Ｎ／５ｃｍ未満であることにより、フィルタエレメントを空気流入面が曲面である取付け枠に、より容易に抵抗なく挿入することが可能となり、エアリークの防止効果に対してより優れた効果が得られる。また、前記端部保形材の長手方向の３％伸長時の引張強度は６０Ｎ／５ｃｍ未満であることが好ましく、４０Ｎ／５ｃｍ未満であることがより好ましい。６０Ｎ／５ｃｍ未満であることにより、フィルタエレメントを空気流入面が曲面である取付け枠に、より容易に抵抗なく挿入することが可能となり、エアリークの防止効果に対してより優れた効果が得られる。   The tensile strength in the longitudinal direction of the end shape-retaining material is 10 to 350 N / 5 cm as measured by the 8.12.1A method (strip method) defined in JIS L1096-1999 (general woven fabric test method). Is preferable, and it is more preferable that it is 15-300 N / 5cm. If it is less than 10 N / 5 cm, it may be impossible to retain the shape of the filter element. If it exceeds 350 N / 5 cm, it may be difficult to easily insert into the mounting frame that is a curved surface without resistance. Further, the tensile strength at the time of 10% elongation in the longitudinal direction of the end shape shaper is preferably less than 100 N / 5 cm, and more preferably less than 70 N / 5 cm. By being less than 100 N / 5 cm, the filter element can be more easily inserted into the mounting frame having a curved air inflow surface without resistance, and a more excellent effect can be obtained with respect to the effect of preventing air leaks. The tensile strength at the time of 3% elongation in the longitudinal direction of the end shape shaper is preferably less than 60 N / 5 cm, and more preferably less than 40 N / 5 cm. By being less than 60 N / 5 cm, the filter element can be more easily inserted into the mounting frame having a curved air inflow surface without resistance, and a more excellent effect can be obtained with respect to the effect of preventing air leaks.

また、前記引張強度に対する前記１０％伸長時の引張強度の比率が０．０１〜０．５であることが好ましく、０．０５〜０．２であることがより好ましい。比率が０．０１〜０．５であることによって、フィルタエレメント全体の保形性を高める効果と共にフィルタエレメントを空気流入面が曲面である取付け枠に容易に抵抗なく挿入でき、エアリークの防止効果に対してより優れた効果が得られる。また、同様に前記引張強度に対する前記３％伸長時の引張強度の比率が０．０１〜０．３であることが好ましく、０．０５〜０．１であることがより好ましい。比率が０．０１〜０．３であることによって、フィルタエレメント全体の保形性を高める効果と共にフィルタエレメントを空気流入面が曲面である取付け枠に、容易に抵抗なく挿入でき、エアリークの防止効果に対してより優れた効果が得られる。   Further, the ratio of the tensile strength at 10% elongation to the tensile strength is preferably 0.01 to 0.5, and more preferably 0.05 to 0.2. When the ratio is 0.01 to 0.5, the filter element can be easily inserted into the mounting frame having a curved air inflow surface without resistance, and the effect of preventing air leakage can be achieved. A better effect can be obtained. Similarly, the ratio of the tensile strength at 3% elongation to the tensile strength is preferably 0.01 to 0.3, and more preferably 0.05 to 0.1. When the ratio is 0.01 to 0.3, the filter element can be easily inserted into the mounting frame having a curved air inflow surface without resistance and the effect of preventing air leaks. A better effect can be obtained.

以上のようにして形成されるフィルタエレメントの寸法は、図１（ａ）に示すように、高さＨは５〜６０ｍｍが好ましく、８〜２５ｍｍがより好ましい。また、巾Ｗは２〜３０ｃｍが好ましく、５〜２０ｃｍがより好ましい。また、長さＬは５〜５０ｃｍが好ましく、１０〜３０ｃｍがより好ましい。   As shown in FIG. 1A, the dimension of the filter element formed as described above is preferably 5 to 60 mm, and more preferably 8 to 25 mm. Further, the width W is preferably 2 to 30 cm, and more preferably 5 to 20 cm. The length L is preferably 5 to 50 cm, more preferably 10 to 30 cm.

本発明のフィルタエレメントは、図３に示すように、下流側のひだ山線を結ぶ面を前記フィルタエレメントの下流面とすると、下流面を上または下にした状態において、ひだ山線と直交する方向の先端から１ｃｍまでの部分全体に１ｃｍ２あたり２０ｇの荷重を載せた場合、ひだ山線と直交する方向の剛軟度（以下剛軟度Ａと称することがある）が、ＪＩＳ Ｌ１０９６−１９９９（一般織物試験方法）に規定される、剛軟性８．１９．１Ａ法（４５度カンチレバー法）にて測定すると１５０ｍｍ以下であり、より好ましくは１００ｍｍ以下である。剛軟度Ａが１５０ｍｍを超えると、例えば図１（ｃ）に示すような、空気流入面が曲面である取付け枠に対して、容易に抵抗なく挿入することが困難になる。また、フィルタエレメントが折れ曲がったり取付け枠の爪から外れたりするという問題が発生したり、エアリークが発生するという危険が生じる。 As shown in FIG. 3, the filter element of the present invention is orthogonal to the pleat line when the downstream face of the filter element is the downstream face of the filter element when the downstream face of the pleat line is the downstream face of the filter element. When a load of 20 g per 1 cm 2 is placed on the entire portion from the tip of the direction to 1 cm, the bending resistance in the direction perpendicular to the pleat line (hereinafter sometimes referred to as bending resistance A) is JIS L1096-1999. It is 150 mm or less, more preferably 100 mm or less as measured by the stiffness / softness 8.19.1A method (45 degree cantilever method) defined in (General Textile Testing Method). When the bending resistance A exceeds 150 mm, it becomes difficult to insert without resistance in an attachment frame whose air inflow surface is a curved surface, for example, as shown in FIG. In addition, there is a risk that the filter element may be bent or come off the claw of the mounting frame, or air leaks may occur.

また、本発明のフィルタエレメントは、図４に示すように、下流側のひだ山線を結ぶ面を前記フィルタエレメントの下流面とすると、下流面を上または下にした状態において、ひだ山線と直交する方向の剛軟度（以下剛軟度Ｂと称することがある）が、ＪＩＳ Ｌ１０９６−１９９９（一般織物試験方法）に規定される、剛軟性８．１９．１Ａ法（４５度カンチレバー法）にて測定すると１００ｍｍ以下であることが好ましく、例えば図１（ｃ）に示すような、空気流入面が曲面である取付け枠に対して、より容易に抵抗なく挿入でき、エアリークの防止効果に対してより優れた効果が得られる。なお、剛軟度は、試験片の寸法を、図１（ａ）に示すようにフィルタエレメント（１）の巾Ｗ（ｃｍ）×長さＬ（ｃｍ）として測定した値とする。また、フィルタエレメントの長さ（ｃｍ）が剛軟度の値よりも小さく、剛軟度の値を測定することができない場合は、長さ方向にフィルタエレメントを２個以上接合して、フィルタエレメントの長さをＬ（ｃｍ）×ｎ倍として測定した値を用いるか、或いはフィルタエレメントの長さＬ（ｍｍ）以上と表すことができる。   In addition, as shown in FIG. 4, the filter element of the present invention has a pleat line in a state where the downstream surface is up or down when the downstream surface of the filter element is a surface connecting the downstream fold lines. The bending resistance 8.19.1A method (45-degree cantilever method) defined by JIS L1096-1999 (general fabric test method) is the bending resistance in the orthogonal direction (hereinafter sometimes referred to as bending resistance B). Is preferably 100 mm or less. For example, as shown in FIG. 1 (c), it can be more easily inserted without resistance into a mounting frame whose air inflow surface is a curved surface. Better results. The bending resistance is a value obtained by measuring the dimension of the test piece as width W (cm) × length L (cm) of the filter element (1) as shown in FIG. If the length (cm) of the filter element is smaller than the bending resistance value and the bending resistance value cannot be measured, two or more filtering elements are joined in the length direction, and the filtering element Can be expressed as L (cm) × n times or the length of the filter element L (mm) or more.

以上説明したように、本発明のフィルタエレメントは、空気流入面が曲面である取付け枠にも容易に抵抗なく挿入が可能である。ここで、取付け枠は、曲面である限り特に限定されず、例えば図１（ｃ）に示すように空気流入面が凸面である場合でも、その逆に空気流入面が凹面である場合でも、また横から見てＳ字状の曲面となっている場合でも可能である。また、本発明のフィルタエレメントの表面または取付け枠の曲面の曲率半径は図２に示すように、Ｏを中心とする円弧ＰＱの半径Ｒを曲率半径とすると、１０〜１０００ｍｍが望ましく、２５〜５００ｍｍがより望ましく、５０〜２００ｍｍがさらに望ましい。なお、曲面がＳ字状等複雑な場合は曲線を一定間隔で区切った区間の曲率半径の平均値を用いることができる。   As described above, the filter element of the present invention can be easily inserted into a mounting frame having a curved air inflow surface without resistance. Here, the mounting frame is not particularly limited as long as it is a curved surface. For example, as shown in FIG. 1C, even when the air inflow surface is a convex surface, conversely, when the air inflow surface is a concave surface, This is possible even when the S-shaped curved surface is seen from the side. Further, as shown in FIG. 2, the radius of curvature of the surface of the filter element of the present invention or the curved surface of the mounting frame is desirably 10 to 1000 mm, preferably 25 to 500 mm, where the radius R of the arc PQ centered on O is the curvature radius. Is more desirable, and 50 to 200 mm is even more desirable. When the curved surface is complicated such as an S shape, the average value of the curvature radii of the section obtained by dividing the curve at a constant interval can be used.

なお、前記フィルタエレメントを取付け枠に取り付ける場合、図１（ａ）、（ｂ）、（ｃ）に例示するように、フィルタエレメントを予め曲面形状としておいてから取り付けることが可能であり、また取付け枠の爪（６）にフィルタエレメントを部分的に順次固定しながら、曲面を形成して取り付けることも可能である。このようにして、前記フィルタエレメントを取付け枠に取り付けた後の形態は図２に示される。   In addition, when attaching the said filter element to an attachment frame, it is possible to attach after making a filter element into a curved surface beforehand so that it may illustrate in Fig.1 (a), (b), (c). It is also possible to form and attach a curved surface while partially fixing the filter element to the claw (6) of the frame sequentially. Thus, the form after attaching the said filter element to an attachment frame is shown by FIG.

以下、本発明の実施例につき説明するが、これは発明の理解を容易とするための好適例に過ぎず、本発明はこれら実施例の内容に限定されるものではない。   Examples of the present invention will be described below, but these are only suitable examples for facilitating the understanding of the present invention, and the present invention is not limited to the contents of these examples.

（厚さの試験方法）
ＪＩＳ Ｌ１０８５−１９９８（不織布しん地試験方法）に記載される、６．１．２Ａ法にて測定した。（ただし、荷重は２．０ｋＰａとする） (Thickness test method)
It was measured by the 6.1.2A method described in JIS L1085-1998 (nonwoven fabric filling test method). (However, the load is 2.0 kPa)

（引張強度、１０％伸長時の引張強度、および３％伸長時の引張強度の試験方法）
ＪＩＳ Ｌ１０９６−１９９９（一般織物試験方法）に規定される、８．１２．１Ａ法（ストリップ法）にて測定した。 (Test method of tensile strength, tensile strength at 10% elongation, and tensile strength at 3% elongation)
It was measured by the 8.12.1A method (strip method) defined in JIS L1096-1999 (general fabric test method).

（剛軟度Ａの試験方法）
図３に示すように、下流側のひだ山線を結ぶ面を前記フィルタエレメントの下流面とすると、下流面を上または下にした状態において、ひだ山線と直交する方向の先端から１ｃｍまでの部分全体に１ｃｍ２あたり２０ｇの荷重を載せた場合、ひだ山線と直交する方向の剛軟度を、ＪＩＳ Ｌ１０９６−１９９９（一般織物試験方法）に規定される、剛軟性８．１９．１Ａ法（４５度カンチレバー法）にて測定した。この剛軟度Ａの値は図３に示す移動距離Ｍの長さで表すことができる。なお、試験片の寸法は、図１（ａ）に示すようにフィルタエレメント（１）の巾Ｗ（ｃｍ）×長さＬ（ｃｍ）とした。また、フィルタエレメントの長さ（ｃｍ）が剛軟度の値よりも小さく、剛軟度の値を測定することができない場合は、長さ方向にフィルタエレメントを２個以上接合して、フィルタエレメントの長さをＬ（ｃｍ）×ｎ倍として測定した値を用いるか、或いはフィルタエレメントの長さＬ（ｍｍ）以上とした。 (Test method for bending resistance A)
As shown in FIG. 3, when the downstream surface of the filter element is a surface connecting the pleat line on the downstream side, in a state where the downstream surface is up or down, the tip is 1 cm from the tip in the direction perpendicular to the pleat line. When a load of 20 g per 1 cm 2 is placed on the entire part, the bending resistance in the direction orthogonal to the fold line is defined by JIS L1096-1999 (General Textile Testing Method), the bending resistance 8.19.1A method. It measured by (45 degree cantilever method). The value of the bending resistance A can be expressed by the length of the movement distance M shown in FIG. In addition, the dimension of the test piece was made into the width W (cm) x length L (cm) of the filter element (1) as shown to Fig.1 (a). If the length (cm) of the filter element is smaller than the bending resistance value and the bending resistance value cannot be measured, two or more filtering elements are joined in the length direction, and the filtering element The value measured with the length of L (cm) × n times was used, or the length of the filter element was equal to or longer than the length L (mm).

（剛軟度Ｂの試験方法）
図４に示すように、下流側のひだ山線を結ぶ面を前記フィルタエレメントの下流面とすると、下流面を上または下にした状態において、ひだ山線と直交する方向の剛軟度が、ＪＩＳ Ｌ１０９６−１９９９（一般織物試験方法）に規定される、剛軟性８．１９．１Ａ法（４５度カンチレバー法）にて測定した。この剛軟度Ｂの値は図４に示す移動距離Ｎの長さで表すことができる。なお、試験片の寸法は、図１（ａ）に示すようにフィルタエレメント（１）の巾Ｗ（ｃｍ）×長さＬ（ｃｍ）とした。また、フィルタエレメントの長さ（ｃｍ）が剛軟度の値よりも小さく、剛軟度の値を測定することができない場合は、長さ方向にフィルタエレメントを２個以上接合して、フィルタエレメントの長さをＬ（ｃｍ）×ｎ倍として測定した値を用いるか、或いはフィルタエレメントの長さＬ（ｍｍ）以上とした。 (Test method for bending resistance B)
As shown in FIG. 4, when the downstream surface of the filter element is a surface connecting the pleat line on the downstream side, in a state where the downstream surface is up or down, the bending resistance in the direction perpendicular to the pleat line is It was measured by the bending resistance 8.19.1A method (45 degree cantilever method) defined in JIS L1096-1999 (general fabric test method). The value of the bending resistance B can be expressed by the length of the movement distance N shown in FIG. In addition, the dimension of the test piece was made into the width W (cm) x length L (cm) of the filter element (1) as shown to Fig.1 (a). If the length (cm) of the filter element is smaller than the bending resistance value and the bending resistance value cannot be measured, two or more filtering elements are joined in the length direction, and the filtering element The value measured with the length of L (cm) × n times was used, or the filter element length L (mm) or more was used.

（取付け枠への装着性）
図１（ｃ）に示す、空気流入面が凸面となった曲面（曲率半径１２０ｍｍ）である取付け枠にフィルタエレメントを挿入したときに、容易に抵抗なく挿入できた場合を○で表し、挿入が困難である場合を×で表した。 (Mountability to the mounting frame)
When the filter element is inserted into the mounting frame shown in FIG. 1C having a curved surface (curvature radius of 120 mm) with a convex air inflow surface, it can be easily inserted without resistance. The case where it was difficult was represented by x.

（実施例１）
実施例１の濾材として、平均繊維径が４μｍのポリプロピレン樹脂からなるメルトブロー不織布と、平均繊維径が２０μｍのポリエステル繊維を主体としたスパンボンド不織布からなる補強用の不織布とを積層した約１ｍ巾の長尺の複合不織布を準備した。次いで、この濾材を１０ｃｍ巾にスリットした後、この濾材を線状の樹脂の方向と直角方向（濾材の長手方向）に１０ｍｍ間隔で表裏交互に折り曲げて、多数のひだを形成した。次いで、この濾材を長手方向に８６ｃｍの長さにカットした濾材片を得た。一方、ポリエステル繊維ウエッブにニードルパンチによる絡合を行い、さらに接着樹脂を含浸処理して繊維間を固定した不織布からなる端部保形材用の基布を得た。次いで、この基布にポリオレフィン系樹脂からなるホットメルト樹脂シートを貼り合せ、その後所定巾と長さにカットして端部保形材を得た。次いで、濾材片をひだの形成された状態に保持して、ひだの両端部にこの端部保形材を加熱処理により接合し、さらに濾材の両端部にも補強のため端部保形材と同じ材料を接合することによってフィルタエレメントを得た。このフィルタエレメントの寸法は、高さＨが１０ｍｍであり、巾Ｗが１０ｃｍであり、また、長さＬは２５ｃｍであった。表１に、実施例１のフィルタエレメント、端部保形材、および端部保形材用の基布に関する試験結果を示す。 Example 1
The filter medium of Example 1 has a width of about 1 m obtained by laminating a melt blown nonwoven fabric made of polypropylene resin having an average fiber diameter of 4 μm and a reinforcing nonwoven fabric mainly made of a spunbond nonwoven fabric mainly made of polyester fibers having an average fiber diameter of 20 μm. A long composite nonwoven fabric was prepared. Next, after slitting the filter medium to a width of 10 cm, the filter medium was alternately bent at the intervals of 10 mm in the direction perpendicular to the linear resin direction (longitudinal direction of the filter medium) to form a large number of pleats. Subsequently, the filter medium piece which cut this filter medium into the length of 86 cm in the longitudinal direction was obtained. On the other hand, the polyester fiber web was entangled with a needle punch and further impregnated with an adhesive resin to obtain a base fabric for an end shape retaining material made of a nonwoven fabric in which the fibers were fixed. Next, a hot melt resin sheet made of polyolefin resin was bonded to the base fabric, and then cut into a predetermined width and length to obtain an end shape-retaining material. Next, the filter medium pieces are held in the state where the pleats are formed, and this end shape retainer is joined to both ends of the folds by heat treatment, and the end shape retainers for reinforcement are also attached to both ends of the filter medium. A filter element was obtained by joining the same materials. The dimensions of the filter element were a height H of 10 mm, a width W of 10 cm, and a length L of 25 cm. Table 1 shows the test results relating to the filter element of Example 1, the end shape retaining material, and the base fabric for the end shape retaining material.

（実施例２）
実施例１において、芯鞘タイプの複合繊維の潜在捲縮性繊維からなるポリエステル繊維ウエッブに高圧水流による絡合を行った不織布からなる端部保形材用の基布を得たこと以外は、実施例１と同様にして、実施例２のフィルタエレメントを得た。表１に、実施例２のフィルタエレメント、端部保形材、および端部保形材用の基布に関する試験結果を示す。 (Example 2)
In Example 1, except that a base fabric for an end shape retaining material made of a nonwoven fabric entangled with a polyester fiber web made of a latently crimpable fiber of a core-sheath type composite fiber by high-pressure water flow was obtained, A filter element of Example 2 was obtained in the same manner as Example 1. Table 1 shows the test results relating to the filter element of Example 2, the end shape retaining material, and the base fabric for the end shape retaining material.

（実施例３）
実施例１において、芯鞘タイプの複合繊維の潜在捲縮性繊維からなるポリエステル繊維ウエッブに高圧水流による絡合を行った不織布からなる端部保形材用の基布を得たこと、およびこの基布にポリエステル樹脂からなるが実施例１よりも柔軟性のあるホットメルト樹脂シートを貼り合せたこと以外は、実施例１と同様にして、実施例３のフィルタエレメントを得た。表１に、実施例３のフィルタエレメント、端部保形材、および端部保形材用の基布に関する試験結果を示す。 (Example 3)
In Example 1, a base fabric for an end shape retaining material made of a non-woven fabric obtained by entanglement with a polyester fiber web made of a latently crimpable fiber of a core-sheath type composite fiber by high-pressure water flow was obtained, and this A filter element of Example 3 was obtained in the same manner as in Example 1 except that a hot melt resin sheet made of a polyester resin but more flexible than Example 1 was bonded to the base fabric. Table 1 shows the test results relating to the filter element of Example 3, the end shape retaining material, and the base fabric for the end shape retaining material.

（比較例１）
実施例１において、平均繊維径２０μｍのポリエステル繊維からなるスパンボンド不織布に、架橋剤を混入させた接着樹脂を含浸及び加熱処理して、繊維間を固定した不織布からなる端部保形材用の基布を得たたこと以外は、実施例１と同様にして、比較例１のフィルタエレメントを得た。表１に、比較例１のフィルタエレメント、端部保形材、および端部保形材用の基布に関する試験結果を示す。 (Comparative Example 1)
In Example 1, a spunbonded nonwoven fabric composed of polyester fibers having an average fiber diameter of 20 μm was impregnated with an adhesive resin mixed with a crosslinking agent and subjected to heat treatment, and used for an end shape retaining material composed of a nonwoven fabric in which the fibers were fixed. A filter element of Comparative Example 1 was obtained in the same manner as in Example 1 except that the base fabric was obtained. Table 1 shows the test results relating to the filter element, the end shape retaining material, and the base fabric for the end shape retaining material of Comparative Example 1.

表１

Figure 2006116522
Table 1
Figure 2006116522

表１の結果から明らかなように、実施例１〜３のフィルタエレメントは、空気流入面が曲面である取付け枠に対して容易に抵抗なく挿入が可能であり、折れ曲がったり取付け枠の爪から外れたりすることもなく、したがってエアリークも発生することがなく、また端部保形材を予め扇形状にカットしてから濾材のひだの両端面に接合する必要がないことから生産効率も低下することのないフィルタエレメントであった。これに比較して、比較例１のフィルタエレメントは、空気流入面が曲面である取付け枠に対して、濾材が折れ曲がったり、フィルタ枠の爪から外れたりするなどの支障が生じ、抵抗なく挿入することが困難であり、エアリークが発生する危険があり、本発明が目的とするフィルタエレメントとして不適であった。   As is clear from the results in Table 1, the filter elements of Examples 1 to 3 can be easily inserted without resistance into the mounting frame whose air inflow surface is a curved surface, and can be bent or detached from the claw of the mounting frame. Therefore, no air leak occurs, and it is not necessary to cut the end shape retainer into a fan shape before joining it to both ends of the filter media folds, resulting in a decrease in production efficiency. There was no filter element. Compared to this, the filter element of Comparative Example 1 has a problem that the filter medium is bent or detached from the claws of the filter frame with respect to the mounting frame whose air inflow surface is a curved surface, and is inserted without resistance. This is difficult, and there is a risk of air leakage, which is unsuitable as a filter element intended by the present invention.

（ａ）は本発明のフィルタエレメントの一例を示す図であり、（ｂ）は本発明のフィルタエレメントを曲げて凸面を形成した状態の一例を示す図であり、（ｃ）は本発明のフィルタエレメントを挿入するための凸面を有するフィルタ枠の一例を示す図である。(A) is a figure which shows an example of the filter element of this invention, (b) is a figure which shows an example of the state which bent the filter element of this invention, and formed the convex surface, (c) is the filter of this invention It is a figure which shows an example of the filter frame which has a convex surface for inserting an element. 本発明のフィルタエレメントを凸面を有するフィルタ枠に装着した状態の一例を示す図である。また、曲率半径を説明する図である。It is a figure which shows an example of the state with which the filter element of this invention was mounted | worn to the filter frame which has a convex surface. Moreover, it is a figure explaining a curvature radius. 本発明のフィルタエレメントの剛軟度Ａを測定する試験方法を説明する図である。It is a figure explaining the test method which measures the bending resistance A of the filter element of this invention. 本発明のフィルタエレメントの剛軟度Ｂを測定する試験方法を説明する図である。It is a figure explaining the test method which measures the bending resistance B of the filter element of this invention. 従来のフィルタエレメントを従来のフィルタ枠に装着する状態を示す図である。It is a figure which shows the state which attaches the conventional filter element to the conventional filter frame. 従来の別のフィルタエレメントを従来の別のフィルタ枠に装着する状態を示す図である。It is a figure which shows the state which mounts another conventional filter element in another conventional filter frame.

符号の説明Explanation of symbols

１ フィルタエレメント
２ 濾材
３ 端部保形材
４ ひだ山線
５ フィルタ枠
６ 爪
７ フィルタエレメントをフィルタ枠に装着した状態図
８ フィルタエレメントの剛軟度Ａの試験方法
９ 角度４５度の斜面を有する剛軟度試験装置
１０ フィルタエレメントの剛軟度Ｂの試験方法
DESCRIPTION OF SYMBOLS 1 Filter element 2 Filter material 3 End shape retaining material 4 Hidden mountain line 5 Filter frame 6 Claw 7 The state where the filter element is attached to the filter frame Fig. 8 Test method of the bending resistance A of the filter element 9 It has a slope of 45 degrees Bending test apparatus 10 Test method for bending resistance B of filter element

Claims (4)

多数のひだを有する濾材のひだ山線と交差する方向の濾材両端部に端部保形材が接合されてなるフィルタエレメントであって、下流側のひだ山線を結ぶ面を前記フィルタエレメントの下流面とすると、下流面を上または下にした状態において、ひだ山線と直交する方向の先端から１ｃｍの距離までの部分全体に１ｃｍ２あたり２０ｇの荷重を載せた場合、ひだ山線と直交する方向の剛軟度が、４５度カンチレバー法にて測定すると１５０ｍｍ以下であることを特徴とするフィルタエレメント。 A filter element in which end shape-retaining members are joined to both ends of a filter medium in a direction intersecting with a pleat line of a filter medium having a large number of pleats, and a surface connecting downstream pleat lines is downstream of the filter element. Assuming that the surface is the upper side or the lower side, when a load of 20 g per 1 cm 2 is placed on the entire portion from the tip in the direction perpendicular to the pleat line to the distance of 1 cm, the direction is perpendicular to the pleat line. A filter element having a direction bending resistance of 150 mm or less as measured by a 45 degree cantilever method. 請求項１のフィルタエレメントであって、下流側のひだ山線を結ぶ面を前記フィルタエレメントの下流面とすると、下流面を上または下にした状態において、ひだ山線と直交する方向の剛軟度が、４５度カンチレバー法にて測定すると１００ｍｍ以下であることを特徴とする請求項１に記載のフィルタエレメント。   2. The filter element according to claim 1, wherein a surface connecting the downstream fold line is a downstream surface of the filter element, and the bending and softening in a direction perpendicular to the fold line is performed with the downstream surface facing up or down. The filter element according to claim 1, wherein the degree is 100 mm or less when measured by a 45 degree cantilever method. 前記端部保形材の長手方向の引張強度が１０Ｎ／５ｃｍ以上であり、且つ長手方向の１０％伸長時の引張強度が１００Ｎ／５ｃｍ未満であることを特徴とする請求項１または２に記載のフィルタエレメント。   The tensile strength in the longitudinal direction of the end shape shaper is 10 N / 5 cm or more, and the tensile strength at 10% elongation in the longitudinal direction is less than 100 N / 5 cm. Filter elements. 前記端部保形材が、繊維が絡合された不織布からなることを特徴とする請求項１〜３の何れかに記載のフィルタエレメント。
The filter element according to any one of claims 1 to 3, wherein the end shape shaper comprises a nonwoven fabric in which fibers are entangled.
JP2005064733A 2004-09-22 2005-03-09 Filter element Expired - Fee Related JP4627447B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005064733A JP4627447B2 (en) 2004-09-22 2005-03-09 Filter element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004274521 2004-09-22
JP2005064733A JP4627447B2 (en) 2004-09-22 2005-03-09 Filter element

Publications (2)

Publication Number Publication Date
JP2006116522A true JP2006116522A (en) 2006-05-11
JP4627447B2 JP4627447B2 (en) 2011-02-09

Family

ID=36534903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005064733A Expired - Fee Related JP4627447B2 (en) 2004-09-22 2005-03-09 Filter element

Country Status (1)

Country Link
JP (1) JP4627447B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113694644A (en) * 2017-04-11 2021-11-26 康明斯过滤Ip公司 Plate filter element

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0445813A (en) * 1990-06-08 1992-02-14 Toray Ind Inc Filter unit
JPH0531310A (en) * 1991-08-02 1993-02-09 Toray Ind Inc Filter medium having pleating property and fire retardant property
JPH08224412A (en) * 1995-02-20 1996-09-03 Toray Ind Inc Nonwoven fabric, filter medium made from the same and these production
JPH09173734A (en) * 1995-12-02 1997-07-08 Carl Freudenberg:Fa Folding filter pack having flexibility in one direction alone
JP2001046824A (en) * 1999-08-13 2001-02-20 Japan Vilene Co Ltd Air filter, frame body thereof and method for fitting filter element
JP2002105826A (en) * 2000-09-28 2002-04-10 Japan Vilene Co Ltd Porous nonwoven fabric and method of producing the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0445813A (en) * 1990-06-08 1992-02-14 Toray Ind Inc Filter unit
JPH0531310A (en) * 1991-08-02 1993-02-09 Toray Ind Inc Filter medium having pleating property and fire retardant property
JPH08224412A (en) * 1995-02-20 1996-09-03 Toray Ind Inc Nonwoven fabric, filter medium made from the same and these production
JPH09173734A (en) * 1995-12-02 1997-07-08 Carl Freudenberg:Fa Folding filter pack having flexibility in one direction alone
JP2001046824A (en) * 1999-08-13 2001-02-20 Japan Vilene Co Ltd Air filter, frame body thereof and method for fitting filter element
JP2002105826A (en) * 2000-09-28 2002-04-10 Japan Vilene Co Ltd Porous nonwoven fabric and method of producing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113694644A (en) * 2017-04-11 2021-11-26 康明斯过滤Ip公司 Plate filter element
CN113694644B (en) * 2017-04-11 2023-12-05 康明斯过滤Ip公司 Plate filter element

Also Published As

Publication number Publication date
JP4627447B2 (en) 2011-02-09

Similar Documents

Publication Publication Date Title
US20230372854A1 (en) Conformable pleated air filter with bridging filaments
US11179665B2 (en) Nestable framed pleated air filter and method of making
KR101513761B1 (en) Joined filter media pleat packs
US8034146B2 (en) Filter element, method of manufacture and use
JP4486562B2 (en) Filter medium and air cleaner element for internal combustion engine air cleaner
KR102331811B1 (en) Filtration media, pleated media pack, filter cartridge, and methods for manufacturing
US9174159B2 (en) Framed pleated air filter with upstream bridging filaments
KR20130124173A (en) Air filter insert
JP3301227B2 (en) Filter manufacturing method
JP4627447B2 (en) Filter element
JP2011206724A (en) Filter element
JP2014064995A (en) Filter element
JP4972020B2 (en) Comb-shaped member for manufacturing filter element, and method for manufacturing filter element using comb-shaped member for manufacturing filter element
JP5688889B2 (en) Filter pack and replaceable air filter provided with the same
JP2004051037A (en) Air filter for railroad rolling stock
JP7393198B2 (en) Filter pack and air filter
JP4098854B2 (en) Filter media replacement type filter
WO2020189537A1 (en) Filter material and filter unit
JP5253212B2 (en) Filter element
JP5727879B2 (en) Interchangeable filter element
KR100364291B1 (en) Nonwoven fabric for gas filters
JP2008049300A (en) Filter element and method for producing the same
JP2017070900A (en) Reinforced air filter unit
JP2018061924A (en) Nonwoven fabric filter medium for air filter
JP2002336629A (en) Filter unit and filter provided with the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20071114

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091021

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091027

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091217

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100720

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100728

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20101102

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20101105

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131119

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131119

Year of fee payment: 3

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131119

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees