JPH06310A - Filtering material for dust collection - Google Patents
Filtering material for dust collectionInfo
- Publication number
- JPH06310A JPH06310A JP18867192A JP18867192A JPH06310A JP H06310 A JPH06310 A JP H06310A JP 18867192 A JP18867192 A JP 18867192A JP 18867192 A JP18867192 A JP 18867192A JP H06310 A JPH06310 A JP H06310A
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- fiber
- dust
- filter medium
- dust collection
- 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
Links
Landscapes
- Filtering Materials (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
(57)【要約】
【目的】 塵埃濃度の高い空気を清浄化するために用い
る表面濾過に特に適した集塵用濾材を提供する。
【構成】 平均繊度３デニール以下の繊維からなる繊維
ウェブを水流絡合して形成した、見かけ密度０．１５〜
０．３ｇ／cm3 の不織布からなる緻密層を空気流入側に
有する。
【効果】 寿命が長く、強度が大きく、製造コストも低
い。(57) [Abstract] [Purpose] To provide a filter medium for dust collection, which is particularly suitable for surface filtration used for cleaning air having a high dust concentration. [Structure] An apparent density of 0.15 to 5 formed by hydroentangling a fiber web composed of fibers having an average fineness of 3 denier or less.
A dense layer made of a non-woven fabric of 0.3 g / cm 3 is provided on the air inflow side. [Effect] Long life, high strength and low manufacturing cost.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塵埃（ダスト）濃度の
高い空気を清浄化するために用いる濾材、特に表面濾過
用濾材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter medium used for cleaning air having a high dust concentration, particularly a filter medium for surface filtration.
【０００２】[0002]
【従来の技術】塵埃を含む空気を清浄化する濾材には、
空調装置などに使用される内部濾過用濾材と、集塵機や
掃除機などに用いられる表面濾過用濾材とがあり、両者
はそれぞれ濾過原理を異にする。内部濾過は、塵埃濃度
が比較的低い空気の清浄化に使用され、塵埃含有気流を
目の比較的粗い濾材内部にそのまま通し、その気流が濾
材内部を通過する際に塵埃を濾材内部で捕集するもので
ある。これに対し、表面濾過とは、塵埃濃度が比較的高
い空気の清浄化に使用され、目の比較的細かい濾材を用
いる。すなわち、塵埃を濾材表面で捕集して塵埃層を濾
材表面に形成させ、その塵埃層によって次々に塵埃を捕
集し、塵埃層が或る程度の厚さになったら濾材表面から
塵埃層を除去し、再び濾材表面に塵埃層を形成させる操
作を繰り返すものである。従来、不織布を利用した表面
濾過用濾材としては、ニードルパンチフェルトの表面を
毛焼して平滑にしたもの、ニードルパンチフェルトを加
圧加熱（カレンダー）処理して表面を平滑にしたもの、
更にはニードルパンチフェルトの表面にシリコーン樹脂
やテフロン樹脂を樹脂加工して高剥離性を付与したもの
が知られている。しかしながら、これらの濾材の場合
は、ポアサイズ（開孔径）が大きくなり、塵埃が濾材内
部まで侵入し易いため、濾材内部に侵入した塵埃の払い
落としがうまくいかず、濾材寿命が短くなる。また、こ
れらの表面加工でポアサイズを小さくしようとすると、
ポアサイズのコントロールが難しく、通気抵抗が大きく
なりすぎる傾向があった。また、ニードルパンチフェル
トの表面にテフロン製微孔膜をラミネートした濾材も知
られている。この濾材は微孔膜が塵埃の濾材内部への侵
入を防ぎ、効率的な表面濾過を行い、塵埃の払い落とし
性にも優れるが、払い落とし作業時に薄膜が損傷し易
く、コストも高いという欠点があった。2. Description of the Related Art Filter media for cleaning air containing dust include
There are filter media for internal filtration used in air conditioners and filter media for surface filtration used in dust collectors, vacuum cleaners, etc., and both have different filtration principles. Internal filtration is used for cleaning air with a relatively low dust concentration, and allows a dust-containing airflow to pass through the filter medium with relatively coarse mesh as it is, and collects dust inside the filter medium when the airflow passes through the filter medium. To do. On the other hand, the surface filtration is used for cleaning air having a relatively high dust concentration and uses a filter medium having a relatively fine mesh. That is, dust is collected on the surface of the filter medium to form a dust layer on the surface of the filter medium, and the dust layers collect dust one after another, and when the dust layer becomes a certain thickness, the dust layer is removed from the surface of the filter medium. The operation of removing and again forming a dust layer on the surface of the filter medium is repeated. BACKGROUND ART Conventionally, as a filter material for surface filtration using a non-woven fabric, a surface of a needle punched felt is calcinated and smoothed, and a surface of the needle punched felt subjected to pressure heating (calender) treatment to smooth the surface,
Further, it is known that the surface of the needle punched felt is processed with a silicone resin or a Teflon resin to give high peelability. However, in the case of these filter media, the pore size (open hole diameter) becomes large, and the dust easily enters the inside of the filter media, so that the dust that has entered the filter media cannot be removed successfully, and the filter media life becomes short. Also, when trying to reduce the pore size with these surface treatments,
Pore size control was difficult, and ventilation resistance tended to be too high. Further, a filter medium in which a Teflon microporous membrane is laminated on the surface of a needle punch felt is also known. This filter material has a microporous membrane that prevents dust from entering the inside of the filter material, performs efficient surface filtration, and has excellent dust removal properties, but the thin film is easily damaged during the removal work, and the cost is high. was there.
【０００３】[0003]
【発明が解決しようとする課題】本発明者は、細い繊維
からなる繊維ウエブを水流絡合して高密度の緻密不織布
を調製し、これを、塵埃層を形成する濾材の空気流入側
に配置すると、寿命が長く、強度が大きく、コストも低
い表面濾過用濾材が得られることを見出した。本発明
は、こうした知見に基づくものである。DISCLOSURE OF THE INVENTION The present inventor has prepared a high density dense nonwoven fabric by hydroentangling a fiber web made of fine fibers, and disposing the dense nonwoven fabric on the air inflow side of a filter medium forming a dust layer. Then, it has been found that a filter material for surface filtration having a long life, high strength and low cost can be obtained. The present invention is based on these findings.
【０００４】[0004]
【課題を解決するための手段】従って、本発明は、平均
繊度３デニール以下の繊維からなる繊維ウェブを水流絡
合して形成した、見かけ密度０．１５〜０．３ｇ／cm3
の不織布からなる緻密層を空気流入側に有することを特
徴とする、集塵用濾材に関する。本発明の好ましい態様
によれば、前記繊維ウェブは、分割繊維又は異形断面繊
維を（特には２５重量％以上の量で）含有する。また、
本発明の別の好ましい態様の集塵用濾材は、コロナ放電
で処理することによりエレクトレット化されている。Therefore, according to the present invention, an apparent density of 0.15 to 0.3 g / cm 3 is formed by hydroentangling a fiber web made of fibers having an average fineness of 3 denier or less.
The present invention relates to a dust-collecting filter medium having a dense layer made of the non-woven fabric on the air inflow side. According to a preferred embodiment of the invention, the fibrous web contains split fibers or modified cross-section fibers (in particular in amounts of 25% by weight or more). Also,
The dust collecting filter material of another preferred embodiment of the present invention is electretized by treating it with corona discharge.
【０００５】本発明の集塵用濾材は、少なくとも空気流
入側に不織布からなる緻密層を有する。この不織布は、
ウエブ構成繊維として平均繊度が３デニール以下の細い
繊維を用いることによりポアサイズを小さくすると共
に、水流絡合によってウェブを高密度に絡合させ、更に
水流を施した側の表面に平滑性を付与することができ
る。これらの点は、従来の不織布濾材において利用され
ていたニードルパンチ処理では、細い繊維を高密度に絡
合させることが困難であり、ポアサイズを小さくするこ
とが容易でなかったこと、しかも表面平滑にするために
は、毛焼や加熱加圧などの平滑処理が必要であったこと
などと比較して、本発明の優れた点である。なお、平均
繊度が３デニールより太いとポアサイズが大きくなり、
捕集効果が低下すると共に塵埃の払い落とし性が悪くな
る。また、平均繊度の下限は特に制限されない。更に、
緻密層を形成する不織布の見かけ密度が０．１５ｇ／cm
3 より小さいと、濾材の捕集効果が低下する。一方、見
かけ密度０．３ｇ／cm3 より大きいと、通気抵抗が大き
くなりすぎる。The dust collecting filter material of the present invention has a dense layer made of a nonwoven fabric at least on the air inflow side. This non-woven fabric is
By using fine fibers having an average fineness of 3 denier or less as the web-constituting fibers, the pore size is reduced, and the web is entangled with high density by hydroentanglement, and smoothness is imparted to the surface on which water is applied. be able to. These points are that it is difficult to entangle fine fibers with high density by the needle punching process used in the conventional nonwoven fabric filter medium, and it is not easy to reduce the pore size, and the surface is smoothed. This is an advantage of the present invention as compared with the case where smoothing treatment such as scalloping and heating / pressurization was required. If the average fineness is thicker than 3 denier, the pore size will increase,
The collection effect is reduced and the dust removal property is deteriorated. Moreover, the lower limit of the average fineness is not particularly limited. Furthermore,
The apparent density of the non-woven fabric forming the dense layer is 0.15 g / cm
When it is less than 3 , the effect of collecting the filter medium is lowered. On the other hand, if the apparent density is higher than 0.3 g / cm 3 , the ventilation resistance will be too high.
【０００６】本発明濾材の緻密層を構成する不織布の構
成繊維も特に制限されるものではなく、ポリエステル、
ポリプロピレン、ポリアミドやレーヨンなどを用いるこ
とができるが、分割繊維及び／又は異形断面繊維を少な
くとも一部含有させるのが好ましい。分割繊維として
は、例えば図１に示すような繊維断面の２成分以上の樹
脂からなる繊維を使用することができる。なお、図１の
分割繊維１は、分割前は例えばポリアミド繊維部分２と
ポリエステル繊維部分３とが結合した１本の糸としての
形状を有するが〔図１（ａ）〕、機械的ショックなどに
よって、ポリアミド繊維部分２〔図１（ｂ）〕とポリエ
ステル繊維部分３〔図１（ｃ）〕とに容易に分割され、
各繊維部分２及び３は、分割前の糸よりも更に細い糸に
なって不織布を構成することになるので、緻密性が向上
し、表面積が増加する。樹脂の組合せとしては、ポリア
ミド−ポリエステル、ポリアミド−ポリエチレンテレフ
タレート、ポリプロピレン−ポリエステル、ポリプロピ
レン−ポリエチレンなどが適している。また、断面形状
も図１に示すもの以外に多数のものが知られており、そ
れらを任意に用いることができる。分割繊維としては、
機械的衝撃や一成分を抽出することにより分割できる繊
維を使用することができる。特に、水流絡合時の機械的
衝撃により分割する繊維を使用すれば、繊維の分割と絡
合とを同時に実施することができるので好ましい。な
お、本明細書において、分割繊維の平均繊度は分割前の
数値である。The constituent fibers of the non-woven fabric forming the dense layer of the filter material of the present invention are not particularly limited, and polyester,
Polypropylene, polyamide, rayon and the like can be used, but it is preferable to include at least part of the split fibers and / or the modified cross-section fibers. As the split fiber, for example, a fiber made of a resin having two or more components having a fiber cross section as shown in FIG. 1 can be used. Before splitting, the split fiber 1 in FIG. 1 has a shape as a single thread in which, for example, a polyamide fiber portion 2 and a polyester fiber portion 3 are combined [FIG. 1 (a)], but due to mechanical shock or the like. , A polyamide fiber portion 2 [FIG. 1 (b)] and a polyester fiber portion 3 [FIG. 1 (c)] are easily divided,
Since each of the fiber portions 2 and 3 becomes a non-woven fabric by making the yarn thinner than the yarn before division, the denseness is improved and the surface area is increased. Polyamide-polyester, polyamide-polyethylene terephthalate, polypropylene-polyester, polypropylene-polyethylene and the like are suitable as the combination of resins. A large number of cross-sectional shapes other than those shown in FIG. 1 are known, and any of them can be used. As split fibers,
Fibers that can be split by mechanical impact or extraction of one component can be used. In particular, it is preferable to use fibers that are split by mechanical impact during hydroentanglement, because the fibers can be split and entangled at the same time. In addition, in this specification, the average fineness of the split fibers is a value before splitting.
【０００７】異形断面繊維（断面が円形でない繊維）と
しても、各種断面形状を有する繊維を任意に用いること
ができ、例えば図２に示すような繊維断面形状をもつレ
ーヨン系繊維を使用することができる。これらの異形断
面繊維を用いることにより、表面積が増加する。通常繊
維でウェブを構成する場合は、細い繊維を用いるのが好
ましい。分割繊維及び／又は異形繊維を用いる場合は、
それらを２５重量％以上含有させることにより、緻密性
を向上させて表面濾過効果を大きくするのが好ましい。
なお、集塵用濾材を構成する繊維に、前記緻密層も含め
て、芳香族ポリアミド系繊維、ポリフェニレンサルファ
イド（ＰＰＳ）系繊維、ポリイミド系繊維などの耐熱性
繊維を使用して、本発明の集塵用濾材を耐熱性にするこ
とができる。As the modified cross-section fibers (fibers having a non-circular cross section), fibers having various cross-sectional shapes can be arbitrarily used. For example, rayon fibers having a fiber cross-sectional shape as shown in FIG. 2 can be used. it can. By using these modified cross-section fibers, the surface area is increased. When the web is composed of ordinary fibers, it is preferable to use fine fibers. When using split fibers and / or modified fibers,
It is preferable to improve the compactness and enhance the surface filtration effect by containing 25% by weight or more of them.
In addition, the heat-resistant fibers such as aromatic polyamide fibers, polyphenylene sulfide (PPS) fibers, and polyimide fibers, including the dense layer, are used as the fibers constituting the filter material for dust collection to collect the particles of the present invention. The dust filter medium can be made heat resistant.
【０００８】本発明の集塵用濾材は単層であっても多層
であってもよいが、空気流入側の表面層は前記の緻密層
でなければならない。緻密層の厚さは特に限定されな
い。他の層についても特に限定されないが、集塵用濾材
全体の通気抵抗などを考慮すると、緻密層よりも密度の
低いものが望ましい。また、補強のために織物、メッシ
ュ、フィラメントなどの補強材を積層してもよい。この
場合、補強材には引張強度が１０kg／５cm幅以上のもの
を使用するのが望ましい。本発明の水流絡合は、水圧５
０〜２００kg／cm2 の条件で行うことができる。更に、
集塵用濾材の引張強度を高めるために、繊維結合手段と
して水流絡合の他に熱接着性繊維や接着剤による結合を
用いてもよい。とくに、濾材の全面又は一部を加熱加圧
処理すると、濾材の強度を向上させるだけでなく、表面
耐性や表面平滑性を高めることができるので好ましい。
本発明の集塵用濾材は、少なくとも緻密層をエレクトレ
ット化して帯電状態にし、静電気を利用して集塵効率を
向上させるのが好ましい。エレクトレット化は、例え
ば、４kV／cm以上の電界強度のコロナ放電処理によって
実施することができる。The dust collecting filter material of the present invention may be a single layer or a multilayer, but the surface layer on the air inflow side must be the dense layer. The thickness of the dense layer is not particularly limited. Other layers are not particularly limited, but a layer having a density lower than that of the dense layer is preferable in consideration of the ventilation resistance of the whole dust collecting filter medium. Further, a reinforcing material such as a woven fabric, a mesh or a filament may be laminated for reinforcement. In this case, it is desirable to use a reinforcing material having a tensile strength of 10 kg / 5 cm width or more. The hydroentanglement of the present invention has a water pressure of 5
It can be performed under the condition of 0 to 200 kg / cm 2 . Furthermore,
In order to increase the tensile strength of the dust collecting filter medium, as the fiber bonding means, bonding by a heat adhesive fiber or an adhesive may be used in addition to the hydroentangling. In particular, it is preferable to heat or pressurize the entire surface or a part of the filter medium because not only the strength of the filter medium can be improved but also the surface resistance and the surface smoothness can be enhanced.
In the dust collecting filter medium of the present invention, it is preferable that at least the dense layer is electretized to be in a charged state and the static electricity is utilized to improve the dust collecting efficiency. The electretization can be performed by, for example, corona discharge treatment with an electric field intensity of 4 kV / cm or more.
【０００９】[0009]
【実施例】以下、実施例によって本発明を具体的に説明
するが、これらは本発明の範囲を限定するものではな
い。なお、以下の実施例において、塵埃捕集効率及び初
期圧力損失は、平均粒度０．５μｍの大気塵を含む気流
を風速５cm／秒で通過させて測定した値である。実施例１：分割繊維不織布濾材 図１（ａ）の繊維断面を有するポリアミド−ポリエステ
ルの樹脂成分の組合せをもつ分割繊維（繊度２デニー
ル；繊維長５１mm）からなる目付１５０ｇ／ｍ2の繊維
ウェブに、水圧１００kg／cm2 の条件で水流絡合を施し
て、分割繊維を分割〔図１（ｂ）及び（ｃ）参照〕する
と共に繊維を絡合させて、厚さ０．７mm、見かけ密度
０．２１ｇ／cm3 の集塵用濾材を得た。この濾材の塵埃
捕集効果は４５％で、初期圧力損失は６mmＨ2 Ｏであっ
た。The present invention will be described in detail below with reference to examples, but these do not limit the scope of the present invention. In the following examples, the dust collection efficiency and the initial pressure loss are values measured by passing an air flow containing atmospheric dust having an average particle size of 0.5 μm at a wind speed of 5 cm / sec. Example 1: Split fiber nonwoven fabric filter material A fiber web having a basis weight of 150 g / m 2 composed of split fibers (fineness 2 denier; fiber length 51 mm) having a combination of polyamide-polyester resin components having a fiber cross section shown in FIG. 1 (a). , Hydro-entanglement was performed under a water pressure of 100 kg / cm 2 to divide the split fibers [see FIGS. 1 (b) and 1 (c)], and the fibers were also entangled to have a thickness of 0.7 mm and an apparent density of 0. A filter material for dust collection of 0.21 g / cm 3 was obtained. The dust collecting effect of this filter medium was 45%, and the initial pressure loss was 6 mmH 2 O.
【００１０】実施例２：異形繊維と通常繊維との不織布
濾材 図２の繊維断面を有する異形断面レーヨン繊維（繊度
１．５デニール；繊維長５１mm）５０％とポリエステル
繊維（繊度１．５デニール；繊維長５１mm）５０％とか
らなる目付１８０ｇ／ｍ2 の繊維ウェブに、水圧１００
kg／cm2 の条件で水流絡合を施して、厚さ１．１mm、見
かけ密度０．１６ｇ／cm3 の集塵用濾材を得た。この濾
材の塵埃捕集効率は４６％で、初期圧力損失は１．４mm
Ｈ2 Ｏであった。 Example 2: Non-woven fabric of deformed fibers and ordinary fibers
Filter material of a modified cross section having the fiber cross section shown in FIG. 2 (ray fineness 1.5 denier; fiber length 51 mm) 50% and polyester fiber (fineness 1.5 denier; fiber length 51 mm) 50% with a basis weight of 180 g / m 2 . Water pressure of 100 on the fibrous web
Hydroentangling was carried out under the condition of kg / cm 2 to obtain a dust collecting filter medium having a thickness of 1.1 mm and an apparent density of 0.16 g / cm 3 . The filter medium has a dust collection efficiency of 46% and an initial pressure loss of 1.4 mm.
It was H 2 O.
【００１１】比較例１：ニードルパンチ・通常繊維不織
布濾材 ポリエステル繊維（繊度１．５デニール；繊維長５１m
m）からなる目付５００ｇ／ｍ2 の繊維ウェブに、針密
度５００本／cm2 の条件でニードルパンチを施して、厚
さ２．０mm、見かけ密度０．２５ｇ／cm3 の集塵用濾材
を得た。この濾材の塵埃捕集効率は３０％で、初期圧力
損失は３．０mmＨ2 Ｏであった。 Comparative Example 1: Needle punch, ordinary fiber non-woven
Cloth filter medium polyester fiber (fineness 1.5 denier; fiber length 51 m
m), the fiber web having a basis weight of 500 g / m 2 is needle punched under the condition of a needle density of 500 pieces / cm 2 to obtain a dust collecting filter material having a thickness of 2.0 mm and an apparent density of 0.25 g / cm 3. Obtained. The dust collection efficiency of this filter medium was 30%, and the initial pressure loss was 3.0 mmH 2 O.
【００１２】比較例２：太繊度通常繊維の水流絡合不織
布濾材 ポリエステル繊維（繊度４デニール；繊維長５１mm）か
らなる目付１５０ｇ／ｍ2 の繊維ウェブに、水圧１００
kg／cm2 の条件で水流絡合を施して、厚さ０．９mm、見
かけ密度０．１７ｇ／cm3 の集塵用濾材を得た。この濾
材の塵埃捕集効率は２０％で、初期圧力損失は１．５mm
Ｈ2 Ｏであった。 Comparative Example 2: Non-woven hydroentanglement of thick fine fibers
Cloth filter medium Fiber web of polyester fiber (fineness 4 denier; fiber length 51 mm) with a basis weight of 150 g / m 2 and water pressure of 100
Hydroentangling was performed under the condition of kg / cm 2 to obtain a dust collecting filter medium having a thickness of 0.9 mm and an apparent density of 0.17 g / cm 3 . The dust collection efficiency of this filter medium is 20%, and the initial pressure loss is 1.5 mm.
It was H 2 O.
【００１３】実施例３：分割繊維と通常繊維との不織布
濾材 前記実施例１で用いたポリアミド−ポリエステルの樹脂
成分の組合せをもつ分割繊維（繊度２デニール；繊維長
５１mm）３０％と、ポリエステル繊維（繊度１．５デニ
ール；繊維長５１mm）７０％とからなる目付１５０ｇ／
ｍ2 の繊維ウェブに、水圧１００kg／cm2 の条件で水流
絡合を施して、分割繊維を分割すると共に繊維を絡合さ
せて、厚さ０．８mm、見かけ密度０．１９ｇ／cm3 の集
塵用濾材を得た。この濾材の塵埃捕集効率は３８％で、
初期圧力損失は４．５mmＨ2 Ｏであった。 Example 3: Non-woven fabric composed of split fibers and ordinary fibers
Filter material From 30% of split fibers (fineness 2 denier; fiber length 51 mm) having the combination of the polyamide-polyester resin components used in the above Example 1 and 70% polyester fiber (fineness 1.5 denier; fiber length 51 mm) Naru basis weight 150g /
Hydro-entanglement is applied to a m 2 fiber web under the condition of a water pressure of 100 kg / cm 2 to divide the divided fibers and to entangle the fibers to obtain a thickness of 0.8 mm and an apparent density of 0.19 g / cm 3 . A filter material for collecting dust was obtained. The dust collection efficiency of this filter medium is 38%,
The initial pressure loss was 4.5 mmH 2 O.
【００１４】実施例４：異形繊維と通常繊維との不織布
濾材 前記実施例２で用いた異形断面レーヨン繊維（繊度１．
５デニール；繊維長５１mm）３０％と、ポリエステル繊
維（繊度１．５デニール；繊維長５１mm）７０％とから
なる目付１８０ｇ／ｍ2 の繊維ウェブに、水圧１００kg
／cm2 の条件で水流絡合を施して、厚さ０．１２mm、見
かけ密度０．１５ｇ／cm3 の集塵用濾材を得た。この濾
材の塵埃捕集効率は４０％で、初期圧力損失は０．８mm
Ｈ2 Ｏであった。 Example 4: Nonwoven fabric of deformed fibers and ordinary fibers
Filter Material The modified cross-section rayon fiber used in Example 2 (fineness 1.
5 denier; fiber length 51 mm) 30% and polyester fiber (fineness 1.5 denier; fiber length 51 mm) 70% to a fiber web having a basis weight of 180 g / m 2 and a water pressure of 100 kg.
Hydroentangling was carried out under the condition of / cm 2 to obtain a dust collecting filter medium having a thickness of 0.12 mm and an apparent density of 0.15 g / cm 3 . The filter material has a dust collection efficiency of 40% and an initial pressure loss of 0.8 mm.
It was H 2 O.
【００１５】実施例５：エレクトレット化濾材 ポリプロピレン繊維（繊度２デニール；繊維長５１mm）
からなる目付１２０ｇ／ｍ2 の繊維ウェブに、水圧１０
０kg／cm2 の条件で水流絡合を施して、厚さ０．８mm、
見かけ密度０．１５ｇ／cm3 とし、次いで５ＫＶ／cmの
条件でコロナ放電処理をしてエレクトレット化された集
塵用濾材を得た。この濾材の塵埃捕集効率は５５％で、
初期圧力損失は１．０mmＨ2 Ｏであった。 Example 5: Electretized filter medium polypropylene fiber (fineness 2 denier; fiber length 51 mm)
A fiber web having a basis weight of 120 g / m 2 and a water pressure of 10
Water entanglement was performed under the condition of 0 kg / cm 2 , and the thickness was 0.8 mm,
The apparent density was set to 0.15 g / cm 3, and then corona discharge treatment was performed under the conditions of 5 KV / cm to obtain an electretized filter material for dust collection. The dust collection efficiency of this filter medium is 55%,
The initial pressure loss was 1.0 mmH 2 O.
【００１６】実施例６：耐熱性濾材 空気流入側の繊維層として、芳香族ポリアミド繊維（繊
度２デニール；繊維長５１mm）３０％、ポリイミド繊維
（繊度１．５デニール；繊維長５１mm）３０％、及びポ
リフェニレンサルファイド繊維（繊度２デニール；繊維
長５１mm）４０％からなる目付６０ｇ／ｍ2 の繊維ウェ
ブを、そして空気流出側の繊維層として芳香族ポリアミ
ド繊維（繊度３デニール；繊維長５１mm）６０％、及び
ポリフェニレンサルファイド繊維（繊度２デニール；繊
維長５１mm）４０％からなる目付１００ｇ／ｍ2 の繊維
ウェブを積層して、水圧１５０kg／cm2 の条件で水流絡
合を施して、厚さ０．９mm、見かけ密度０．１７ｇ／cm
3 の集塵用濾材を得た。この濾材の塵埃捕集効率は４５
％で、初期圧力損失は０．８mmＨ2 Ｏであった。 Example 6: Heat-resistant filter medium As a fiber layer on the air inflow side, aromatic polyamide fiber (fineness 2 denier; fiber length 51 mm) 30%, polyimide fiber (fineness 1.5 denier; fiber length 51 mm) 30%, And a polyphenylene sulfide fiber (fineness 2 denier; fiber length 51 mm) 40% and a fiber web having a basis weight of 60 g / m 2 , and aromatic polyamide fiber (fineness 3 denier; fiber length 51 mm) 60% as a fiber layer on the air outflow side. , And polyphenylene sulfide fiber (fineness 2 denier; fiber length 51 mm) 40%, and a fiber web having a basis weight of 100 g / m 2 was laminated and hydroentangled at a water pressure of 150 kg / cm 2 to give a thickness of 0. 9 mm, apparent density 0.17 g / cm
A filter material for collecting dust of 3 was obtained. The dust collection efficiency of this filter medium is 45
%, The initial pressure drop was 0.8 mm H 2 O.
【００１７】実施例７：湿式水流絡合通常繊維不織布濾
材 ポリエステル繊維（繊度０．１デニール；繊維長５mm）
からなる目付１００ｇ／ｍ2 の繊維ウェブを湿式抄紙
後、水圧１００kg／cm2 の条件で水流絡合を施して、厚
さ０．６mm、見かけ密度０．１７ｇ／cm3 の集塵用濾材
を得た。この濾材の塵埃捕集効果は５５％で、初期圧力
損失は１６mmＨ2 Ｏであった。 Example 7: Wet hydroentangled ordinary fiber nonwoven fabric filter
Material polyester fiber (fineness 0.1 denier; fiber length 5 mm)
After wetting a fibrous web having a basis weight of 100 g / m 2 by wet-making, hydroentangling was performed under the condition of a water pressure of 100 kg / cm 2 to obtain a dust collecting filter medium having a thickness of 0.6 mm and an apparent density of 0.17 g / cm 3. Obtained. The dust collecting effect of this filter medium was 55%, and the initial pressure loss was 16 mmH 2 O.
【００１８】[0018]
【発明の効果】本発明による集塵用濾材は、細い繊維か
らなる高密度の緻密不織布層を空気流入側に配置してい
るので、表面濾過用濾材として、寿命が長く、強度が大
きく、製造コストも低い。本発明の濾材は、例えば、集
塵機や掃除機用の濾材として有用である。The filter material for dust collection according to the present invention has a high-density dense nonwoven fabric layer made of fine fibers arranged on the air inflow side, so that it has a long life and high strength as a filter material for surface filtration. The cost is also low. The filter medium of the present invention is useful, for example, as a filter medium for dust collectors and vacuum cleaners.
【図１】本発明で用いることのできる分割繊維の断面図
であり、（ａ）は分割前の断面図、（ｂ）は分割後のポ
リアミド繊維部分の断面図、そして（ｃ）は分割後のポ
リエステル繊維部分の断面図である。1 is a cross-sectional view of a split fiber that can be used in the present invention, where (a) is a cross-sectional view before splitting, (b) is a cross-sectional view of a polyamide fiber portion after splitting, and (c) is after splitting. FIG. 3 is a cross-sectional view of the polyester fiber portion of FIG.
【図２】本発明で用いることのできる異形繊維の断面図
である。FIG. 2 is a cross-sectional view of a modified fiber that can be used in the present invention.
Claims (3)
繊維ウェブを水流絡合して形成した、見かけ密度０．１
５〜０．３ｇ／cm3 の不織布からなる緻密層を空気流入
側に有することを特徴とする、集塵用濾材。1. An apparent density of 0.1 formed by hydroentangling a fiber web composed of fibers having an average fineness of 3 denier or less.
A filter material for dust collection, comprising a dense layer made of a non-woven fabric of 5 to 0.3 g / cm 3 on the air inflow side.
含有する請求項１に記載の集塵用濾材。2. The filter medium for dust collection according to claim 1, wherein the fibrous web contains split fibers or modified fibers.
２５重量％以上含有する請求項２に記載の集塵用濾材。3. The filter material for dust collection according to claim 2, wherein the fibrous web contains 25% by weight or more of split fibers or modified fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18867192A JP3295132B2 (en) | 1992-06-23 | 1992-06-23 | Filter media for dust collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18867192A JP3295132B2 (en) | 1992-06-23 | 1992-06-23 | Filter media for dust collection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06310A true JPH06310A (en) | 1994-01-11 |
| JP3295132B2 JP3295132B2 (en) | 2002-06-24 |
Family
ID=16227818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18867192A Expired - Fee Related JP3295132B2 (en) | 1992-06-23 | 1992-06-23 | Filter media for dust collection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3295132B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012759A1 (en) * | 1996-09-20 | 1998-03-26 | Johns Manville International, Inc. | Resilient mat; a method of making the resilient mat and a battery including the resilient mat |
| JP2000117027A (en) * | 1998-08-10 | 2000-04-25 | Toray Ind Inc | Filter fabric for collecting dust and bag filter |
| EP1116809A4 (en) * | 1998-08-10 | 2001-12-05 | Toray Industries | Dust collecting filter cloth and bag filter |
| JP2002001020A (en) * | 2000-04-10 | 2002-01-08 | Toray Ind Inc | Filtering medium |
| JP2006255693A (en) * | 2005-02-18 | 2006-09-28 | Toray Ind Inc | Filter cloth for bag filter and bag filter |
| JP2014073443A (en) * | 2012-10-03 | 2014-04-24 | Daiwabo Holdings Co Ltd | Electrostatic filter |
-
1992
- 1992-06-23 JP JP18867192A patent/JP3295132B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998012759A1 (en) * | 1996-09-20 | 1998-03-26 | Johns Manville International, Inc. | Resilient mat; a method of making the resilient mat and a battery including the resilient mat |
| JP2000117027A (en) * | 1998-08-10 | 2000-04-25 | Toray Ind Inc | Filter fabric for collecting dust and bag filter |
| EP1116809A4 (en) * | 1998-08-10 | 2001-12-05 | Toray Industries | Dust collecting filter cloth and bag filter |
| US6663684B1 (en) | 1998-08-10 | 2003-12-16 | Toray Industries, Inc. | Dust collecting filter cloth and bag filter |
| JP2010064075A (en) * | 1998-08-10 | 2010-03-25 | Toray Ind Inc | Dust collecting filter cloth and bag filter |
| JP2002001020A (en) * | 2000-04-10 | 2002-01-08 | Toray Ind Inc | Filtering medium |
| JP2006255693A (en) * | 2005-02-18 | 2006-09-28 | Toray Ind Inc | Filter cloth for bag filter and bag filter |
| JP2014073443A (en) * | 2012-10-03 | 2014-04-24 | Daiwabo Holdings Co Ltd | Electrostatic filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3295132B2 (en) | 2002-06-24 |
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