JPH05146614A - Cartridge filter - Google Patents
Cartridge filterInfo
- Publication number
- JPH05146614A JPH05146614A JP3339999A JP33999991A JPH05146614A JP H05146614 A JPH05146614 A JP H05146614A JP 3339999 A JP3339999 A JP 3339999A JP 33999991 A JP33999991 A JP 33999991A JP H05146614 A JPH05146614 A JP H05146614A
- Authority
- JP
- Japan
- Prior art keywords
- filtration
- cartridge filter
- fiber
- component
- denier
- 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
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- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐酸性と耐アルカリ性
に優れ、従来のポリエチレンあるいはポリプロピレンと
組み合わせた繊維からなるカートリッジフィルターより
耐熱性のある高濾過精度のカートリッジフィルターに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge filter which has excellent acid resistance and alkali resistance and is more heat resistant than a conventional cartridge filter made of fibers combined with polyethylene or polypropylene and having high filtration accuracy.
【０００２】[0002]
【従来の技術】カートリッジタイプの円筒状フィルター
は、通常、中空円筒状濾過層が繊維で構成され、目的と
する濾過液をその中空円筒状の濾過層の外側から内側に
向かって通過させ、濾過した清浄液をその中空円筒の中
心部において排出するか、またはその逆に濾過液を中空
部から外側に向かって通過させ、濾過した清浄液を中空
円筒状の濾過層の外側に流出させるという２方式があ
り、主に液体の濾過に有用なものである。特に、製薬工
業、電子工業等で使用される精製水の濾過や食品工業で
のアルコール飲料の製造工程における濾過あるいは自動
車工業での塗装材の濾過等の様々な分野で使用されてい
る。2. Description of the Related Art In a cartridge type cylindrical filter, a hollow cylindrical filtration layer is usually composed of fibers, and a desired filtrate is passed through the hollow cylindrical filtration layer from the outside toward the inside to filter the filtration liquid. The purified liquid is discharged at the center of the hollow cylinder, or vice versa, the filtered liquid is passed from the hollow portion toward the outside, and the filtered cleaning liquid is discharged to the outside of the hollow cylindrical filter layer. There is a method, and it is mainly useful for filtering liquid. In particular, it is used in various fields such as filtration of purified water used in the pharmaceutical industry, electronic industry and the like, filtration in the manufacturing process of alcoholic beverages in the food industry or filtration of coating materials in the automobile industry.
【０００３】従来、このようなタイプのカートリッジフ
ィルターとしては、実開昭６１−１２１９２２号公報に
記載の多孔性芯筒に通常の紡績糸、紡毛糸または篠糸を
巻き付けたもの、あるいは特公平１−５３５６５号公報
記載のように広幅の不織布シートを単に巻き付けたもの
がある。Conventionally, as a cartridge filter of this type, a porous core cylinder described in Japanese Utility Model Publication No. 61-121922, which is wound with ordinary spun yarn, woolen yarn or shinoba yarn, or Japanese Patent Publication No. There is one in which a wide non-woven fabric sheet is simply wound as described in Japanese Patent No. 53565.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、通常の
紡績糸や紡毛糸を巻き付けて濾過層を形成したものは製
造コストが低廉であるが、一方では濾過液が主として糸
格子間の比較的大きな空隙路を通るため高精度な濾過用
としては不向きであり、初期濾過効率も良好ではない。
また繊維不織布を広い幅のままノリ巻状態に捲回してな
るカートリッジフィルターは、巻き密度を上げることに
よってある程度濾過精度を向上させることができるが、
繊維繊度が大きいことから高濾過精度を十分満足できる
ものは得られていない。However, although the conventional spun yarn or woolen yarn wound to form a filtration layer has a low manufacturing cost, on the other hand, the filtrate is mainly a relatively large void between the yarn lattices. Since it passes through the passage, it is not suitable for high-precision filtration, and the initial filtration efficiency is not good.
Further, a cartridge filter formed by winding a fibrous nonwoven fabric in a lapping state with a wide width can improve the filtration accuracy to some extent by increasing the winding density.
Due to the large fiber fineness, no one has sufficiently obtained high filtration accuracy.
【０００５】このことから近年、非相溶性の２種のポリ
マー、例えばナイロンとポリエステルあるいはポリプロ
ピレンとポリエチレンとからなる分割型複合繊維を分割
処理して極細繊維化した不織布を上記濾過層に使用する
試みがなされている。ところが前者の場合は耐薬品性に
問題があり、後者の場合は耐薬品性に優れているが耐熱
性に難点があり、化学工業の分野の液処理、例えば１５
０〜１６０℃の有機溶剤等の濾過に使用した場合 侵食
や繊維の溶融が生じて早期に濾過機能が低下する。Therefore, in recent years, it has been attempted to use a non-woven fabric, which is obtained by subjecting a splittable conjugate fiber composed of two incompatible polymers, for example, nylon and polyester or polypropylene and polyethylene, to a fine fiber to perform the above-mentioned filtration layer. Has been done. However, in the former case, there is a problem in chemical resistance, and in the latter case, the chemical resistance is excellent, but there is a drawback in heat resistance.
When used for filtration of an organic solvent of 0 to 160 ° C, erosion and melting of fibers occur, and the filtration function deteriorates early.
【０００６】本発明は、１５０〜１６０℃程度の温度に
耐え、しかも耐薬品性に優れ、さらに高精度の濾過を行
うことができるカートリッジフィルターを提供すること
を目的としてなされたものである。The present invention has been made for the purpose of providing a cartridge filter which can withstand a temperature of about 150 to 160 ° C., is excellent in chemical resistance, and can perform filtration with high precision.
【０００７】[0007]
【課題を解決するための手段】本発明は上記目的を達成
するべく、カートリッジフィルターの濾過層にポリプロ
ピレン極細繊維およびポリメチルペンテンコポリマー極
細繊維からなる不織布を使用した。即ち本発明のカート
リッジフィルターは、通液性芯筒上に巻回された筒状濾
過層が、第１成分がポリプロピレン、第２成分がポリメ
チルペンテンコポリマーからなる分割型複合繊維の両成
分が分割された太さ0.5 デニール以下の極細繊維を少な
くとも５０重量％含有してなる不織布であり、その濾過
層の繊維密度が０．１８〜０．３５g/cm3 であることを
特徴としている。In order to achieve the above object, the present invention uses a non-woven fabric composed of polypropylene ultrafine fibers and polymethylpentene copolymer ultrafine fibers in the filtration layer of a cartridge filter. That is, in the cartridge filter of the present invention, the tubular filtration layer wound on the liquid-permeable core tube is divided into both components of the splittable conjugate fiber in which the first component is polypropylene and the second component is polymethylpentene copolymer. It is a nonwoven fabric containing at least 50% by weight of ultrafine fibers having a thickness of 0.5 denier or less, and the fiber density of the filtration layer is 0.18 to 0.35 g / cm 3 .
【０００８】通液性芯筒には多孔性芯筒あるいはポーラ
ス構造の繊維成形芯筒が使用でき、多孔性芯筒には通
常、ポリプロピレン製などのプラスチック、金属、セラ
ミックスなど耐熱耐薬品性に優れた材料が用いられ、コ
ストの点からポリプロピレン製等のプラスチック製成形
品が好ましい。芯筒の大きさや形状は濾過装置のサイズ
や形式に合わせて作ると良く、孔の大きさは一例として
一辺が３〜５mmの程度に方形のものが好ましく適用でき
る。A porous core tube or a fiber molded core tube having a porous structure can be used as the liquid-permeable core tube, and the porous core tube is usually excellent in heat resistance and chemical resistance such as plastics such as polypropylene, metal, ceramics. These materials are used, and plastic molded articles such as polypropylene are preferable from the viewpoint of cost. The size and shape of the core tube may be made according to the size and type of the filtration device, and as the size of the hole, for example, a square shape having a side of 3 to 5 mm is preferably applied.
【０００９】また、繊維成形芯筒としては、例えば熱接
着性成分を含んだ繊維ウェブをその熱接着性成分の融点
以上の温度で加熱しながら巻き取ることによって形成す
ることができる。熱接着性単一繊維、並列型または芯鞘
型、分割型、海島型の熱接着性複合繊維の単独もしくは
非熱接着性繊維との混合してたウェブによっても得るこ
とができる。このうち最も好ましい繊維としては、濾過
層と同様の成分であって、熱接着成分がポリプロピレ
ン、非熱接着成分がポリメチルペンテンコポリマーから
なる並列型または芯鞘型、分割型、海島型の複合繊維で
ある。The fiber-molded core tube can be formed, for example, by winding a fiber web containing a heat-adhesive component while heating it at a temperature higher than the melting point of the heat-adhesive component. It can also be obtained from a web of heat-bondable single fibers, side-by-side or core-sheath, split-type, sea-island heat-bonded composite fibers, alone or mixed with non-heat-bonded fibers. Among them, the most preferable fiber is a component similar to that of the filtration layer, wherein the heat-bonding component is polypropylene and the non-heat-bonding component is polymethylpentene copolymer, which are parallel type or core-sheath type, split type, sea-island type composite fibers. Is.
【００１０】本考案のカートリッジフィルターは、上記
多孔性芯筒もしくは繊維成形芯筒上に第１成分がポリプ
ロピレン、第２成分がポリメチルペンテンコポリマーか
らなる分割型複合繊維ポリプロピレンとポリメチルペン
テンコポリマーからなる０．５デニール以下の極細繊維
を少なくとも５０重量％含有してなる不織布を巻き付け
ることによって作られる。０．５デニール以下の極細繊
維は、上記２成分からなる分割型複合繊維を分割するこ
とによって得ることができる。ポリメチルペンテンコポ
リマーとは、４−メチルペンテン−１と例えばエチレ
ン、プロピレン、ブテン−１、ヘキセン−１、オクテン
−１、デセン−１、テトラデセン−１、オクタデセン−
１等の炭素数２〜２０、好ましくは炭素数８〜１８のα
−オレフィンの１種または２種とのコポリマーであっ
て、通常４−メチルペンテン−１を８５モル％以上含む
ものである。分割型複合繊維の繊維断面の形状は種々考
えられ、特に限定するものではないが、放射線状型が好
ましい。The cartridge filter of the present invention comprises a split type composite fiber polypropylene and a polymethylpentene copolymer, wherein the first component is polypropylene and the second component is polymethylpentene copolymer on the porous core tube or fiber molding core tube. It is made by winding a non-woven fabric containing at least 50% by weight of ultrafine fibers of 0.5 denier or less. Ultrafine fibers of 0.5 denier or less can be obtained by dividing the splittable conjugate fiber composed of the above two components. The polymethylpentene copolymer means 4-methylpentene-1 and, for example, ethylene, propylene, butene-1, hexene-1, octene-1, decene-1, tetradecene-1, octadecene-.
Α having 1 to 20 carbon atoms, preferably 2 to 20 carbon atoms
-Copolymer with one or two olefins, which usually contains 85 mol% or more of 4-methylpentene-1. Although the shape of the fiber cross section of the splittable conjugate fiber can be variously considered and is not particularly limited, a radial type is preferable.
【００１１】上記２成分を用いて溶融複合押出紡糸し、
延伸後、所望の長さに切断し、ステープル繊維とする。
このステープル繊維をカード法、クロスレイヤー法、ラ
ンダムウェバー法、湿式抄造法、乾式または湿熱接着
法、ニードルパンチ法、高圧液流法等により不織布とな
すが、この時点で分割が不十分のものは更にニードルパ
ンチ処理、高圧液流処理、超音波処理等の処理を施し、
あるいは一部熱融着させるとよい。Melt composite extrusion spinning using the above two components,
After stretching, the staple fibers are cut into desired lengths.
The staple fiber is formed into a non-woven fabric by a card method, a cross layer method, a random webber method, a wet papermaking method, a dry or wet heat bonding method, a needle punch method, a high-pressure liquid flow method, etc. In addition, needle punching, high-pressure liquid stream processing, ultrasonic processing, etc.
Alternatively, it is advisable to partially heat-bond it.
【００１２】本考案に適用される不織布には、上記分割
型複合繊維が分割された０．５デニール以下の極細繊維
が５０重量％以上含まれている。この極細繊維の他に、
０．５デニールを超える分割型複合繊維の未分割繊維や
分割不十分な繊維が５０重量％未満の範囲において混在
していてもよい。そして不織布の目付としては、２０〜
１５０g/m2が好ましい。０．５デニール以下の極細繊維
が５０重量％未満となると濾過精度の向上が期待できな
い。また目付が２０g/m2未満であると不織布の地合いム
ラが生じ、濾過精度ムラが発生する。目付が１５０g/m2
を超えると嵩ったものとなり、特に最終巻終り端のシー
ルが難しくなる。The nonwoven fabric applied to the present invention contains 50% by weight or more of 0.5 denier or less ultrafine fibers obtained by dividing the above-mentioned splittable conjugate fiber. Besides this ultrafine fiber,
Undivided fibers of splittable conjugate fibers having a denier of more than 0.5 denier and fibers of insufficient splitting may be mixed in a range of less than 50% by weight. And as for the basis weight of the nonwoven fabric, 20 to 20
150 g / m 2 is preferred. If the ultrafine fibers of 0.5 denier or less are less than 50% by weight, improvement in filtration accuracy cannot be expected. Further, if the basis weight is less than 20 g / m 2 , unevenness in the texture of the non-woven fabric occurs, resulting in uneven filtration accuracy. Unit weight is 150g / m 2
If it exceeds, it becomes bulky, and it becomes particularly difficult to seal the end of the final winding.
【００１３】上記多孔性芯筒もしくは繊維成形芯筒上に
上記不織布を巻回して濾過層を形成し、カートリッジフ
ィルターとなすが、濾過層の繊維密度は０．１８〜０．
３５g/cm3 が好ましい。繊維密度が０．１８g/cm3 未満
であると濾過精度が低下し、濾過層の形態安定性をも低
下させ、０．３５g/cm3 を超えると濾過ライフの低下に
つながる。The non-woven fabric is wound around the porous core tube or the fiber molding core tube to form a filtration layer to form a cartridge filter, and the fiber density of the filtration layer is 0.18 to 0.
35 g / cm 3 is preferred. If the fiber density is less than 0.18 g / cm 3 , the filtration accuracy will be reduced, and the morphological stability of the filtration layer will also be reduced, and if it exceeds 0.35 g / cm 3 , the filtration life will be reduced.
【００１４】[0014]
【作用】ポリオレフィン成分同志でしかもα−ポリオレ
フィンとしては最も高融点の組み合わせであるポリプロ
ピレンとポリメチルペンテンコポリマーとからなる複合
繊維の不織布は、濾過層に優れた耐薬品性と耐熱性を付
与し、０．５デニール以下の極細繊維でその繊維密度が
０．１８〜０．３５g/cm3 の不織布濾過層は、比較的細
かな粒子をも捕集して濾過精度を向上させる。[Function] A non-woven fabric of composite fibers composed of polypropylene and polymethylpentene copolymer, which are polyolefin components having the same melting point and the highest melting point as α-polyolefin, impart excellent chemical resistance and heat resistance to the filtration layer, The non-woven fabric filtration layer having an ultrafine fiber of 0.5 denier or less and a fiber density of 0.18 to 0.35 g / cm 3 also collects relatively fine particles to improve filtration accuracy.
【００１５】[0015]
【実施例】図２に示すような繊維断面（但し、１６分
割）を有し、Ａ成分(6) としてポリプロピレンを、Ｂ成
分(7) としてポリメチルペンテンコポリマーを配し、溶
融複合押出紡糸し、延伸後、切断を行い、３デニール、
４５mmの分割型複合繊維(5)を得た。この分割型複合繊
維(5) を１００重量％用いてカード機によりカードウェ
ブとし、水圧１５０kg/cm2、速度３m/min で表裏各３回
高圧液体流処理し、目付６０g/m2の不織布を得た。この
処理により、分割型複合繊維(5) はその９０％が各成分
(6)(7)に分割され、０．１９デニールの極細繊維となっ
ていた。EXAMPLE A polypropylene having a fiber cross section (16 divisions) as shown in FIG. 2, polypropylene as the A component (6), and polymethylpentene copolymer as the B component (7) were placed and melt-composite extrusion spinning was performed. , After stretching, cut, 3 denier,
A 45 mm splittable conjugate fiber (5) was obtained. A carded web by a carding machine The splittable conjugate fiber (5) with 100 wt%, water pressure 150 kg / cm 2, was treated by high pressure liquid stream sides each 3 times at a speed 3m / min, a weight per unit area 60 g / m 2 nonwoven fabric Obtained. By this treatment, 90% of the splittable conjugate fiber (5) has each component.
It was divided into (6) and (7), resulting in 0.19 denier ultrafine fibers.
【００１６】次に外径３２mm、長さ２５０mmのポリプロ
ピレン製多孔性芯筒(3) の上に上記不織布を外径が６５
mmになるまで巻回し、繊維密度が０．１８g/cm3 の濾過
層(2)を形成し、図１に示すようなカートリッジフィル
ター(1) となした。Next, the above-mentioned non-woven fabric having an outer diameter of 65 is placed on a polypropylene core tube (3) having an outer diameter of 32 mm and a length of 250 mm.
It was wound until it became mm, and a filter layer (2) having a fiber density of 0.18 g / cm 3 was formed to obtain a cartridge filter (1) as shown in FIG.
【００１７】［比較例１］ 「実施例」の分割型複合繊
維を高圧液体流処理をすることなく、熱風貫通型加工機
で不織布とし、その不織布を実施例１と同様にポリプロ
ピレン製多孔性芯筒の上に上記不織布を外径が６５mmに
なるまで巻回し、繊維密度が０．１８g/cm3 の濾過層を
形成し、カートリッジフィルターとなした。[Comparative Example 1] The splittable conjugate fiber of "Example" was made into a non-woven fabric by a hot air penetrating type processing machine without being subjected to a high-pressure liquid flow treatment, and the non-woven fabric was made of a polypropylene porous core in the same manner as in Example 1. The non-woven fabric was wound on the cylinder until the outer diameter became 65 mm to form a filter layer having a fiber density of 0.18 g / cm 3 to form a cartridge filter.
【００１８】［比較例２］ 「実施例」の分割型複合繊
維のＢ成分にをポリエチレンを配し、実施例１と同様の
手順によって濾過層が０．１９デニールの極細繊維から
なる同一形状のカートリッジフィルターとなした。[Comparative Example 2] Polyethylene was added to the component B of the splittable conjugate fiber of "Example", and the same procedure as in Example 1 was used to form a filter layer of 0.19 denier ultrafine fibers of the same shape. It was a cartridge filter.
【００１９】［比較例３］ 「実施例」の分割型複合繊
維のＡ成分にポリエチレンテレフタレート、Ｂ成分にナ
イロン６を配し、実施例１と同様の手順によって濾過層
が０．１９デニールの極細繊維からなる同一形状のカー
トリッジフィルターとなした。[Comparative Example 3] Polyethylene terephthalate was placed as the component A and nylon 6 was placed as the component B of the splittable conjugate fiber of the "Example", and the filtration layer was made to have an ultrafine thickness of 0.19 denier by the same procedure as in Example 1. A cartridge filter of the same shape made of fibers was used.
【００２０】上記「実施例」および「比較例１〜３」の
各カートリッジフィルターの濾過性能を測定し、性能を
評価した。その結果を表１に示す。The filtration performance of each of the cartridge filters of the above "Example" and "Comparative Examples 1 to 3" was measured to evaluate the performance. The results are shown in Table 1.
【００２１】なお濾過性能については下記のように評価
した。 １．濾過ライフ（ｌ） 濃度２００ｐｐｍに調整された試験用ダスト（ＪＩＳ１
１種、関東ローム、平均粒径２μｍ）の懸濁液を均一に
攪拌しながら各カートリッジフィルターの外側から中空
部に向かって１０l/min を維持するための通水圧力が
２．０kg/cm2となった時の総通水量(l) で評価する。 ２．初期濾過効率（％） 上記懸濁液１ｌを採取し、乾燥後のダスト重量をＡと
し、濾過開始１分経過後の清浄水を１ｌ採取し、乾燥後
のダスト重量をＢとして次式により算出した。 初期濾過効率（％）＝［（Ａ−Ｂ）／Ａ］×１００ ３．濾過精度（μｍ） 上記清浄水を採取し、超遠心式自動粒度分布装置（堀場
製作所株式会社製）で狭雑粒子の径を測定し、その最大
粒径とした。 ４．耐酸性 １００℃の熱塩酸中（１Ｎ）に５時間浸漬し、下記の評
価をした。 ○は変化なし。△は一部溶解または劣化。×は全部溶解
または劣化。 ５．耐アルカリ性 １００℃の熱苛性ソーダ中（３％）に５時間浸漬し、下
記の評価をした。 ○は変化なし。△は一部溶解または劣化。×は全部溶解
または劣化。 耐熱性 １５０℃のシリコンオイル中に５時間浸漬し、下記の評
価をした。 ○は変化なし。△は一部溶解。×は全部溶解。The filtration performance was evaluated as follows. 1. Filtration life (l) Test dust adjusted to a concentration of 200 ppm (JIS1
(1st type, Kanto loam, average particle size 2μm) While stirring uniformly, the water pressure for maintaining 10l / min from the outside of each cartridge filter toward the hollow part is 2.0kg / cm 2 It is evaluated by the total water flow (l) when it becomes. 2. Initial filtration efficiency (%) 1 l of the above suspension was sampled, the weight of dust after drying was taken as A, 1 l of clean water after 1 minute from the start of filtration was taken, and the weight of dust after drying was taken as B and calculated by the following formula did. Initial filtration efficiency (%) = [(A−B) / A] × 100 3. Filtration accuracy (μm) The clean water was sampled, and the diameter of miscellaneous particles was measured with an ultracentrifugal automatic particle size distribution device (manufactured by Horiba Ltd.) to obtain the maximum particle size. 4. Acid resistance It was immersed in hot hydrochloric acid (1N) at 100 ° C. for 5 hours and evaluated as follows. ○ means no change. △ is partially dissolved or deteriorated. All x are dissolved or deteriorated. 5. Alkali resistance It was immersed in hot caustic soda (3%) at 100 ° C. for 5 hours and evaluated as follows. ○ means no change. △ is partially dissolved or deteriorated. All x are dissolved or deteriorated. Heat resistance It was immersed in silicon oil at 150 ° C. for 5 hours and evaluated as follows. ○ means no change. △ is partially dissolved. All x are dissolved.
【００２２】[0022]
【表１】 [Table 1]
【００２３】[0023]
【発明の効果】本発明のカートリッジフィルターは、通
液性芯筒上に巻回された筒状濾過層が、第１成分がポリ
プロピレン、第２成分がポリメチルペンテンコポリマー
からなる分割型複合繊維の両成分が分割された太さ0.5
デニール以下の極細繊維を少なくとも５０重量％含有し
てなる不織布であり、その濾過層の繊維密度が０．１８
〜０．３５g/cm3 であるから、被濾過液を外表面から中
心部に向かって通液濾過するフィルターに適用すれば、
被濾過液中の比較的粒径の小さな微細固形物をも捕集す
ることができ、高精度濾過を達成することができる。し
かも濾過層の極細繊維はα−ポリオレフィンとしては最
も高融点のポリオレフィンであるため、耐薬品性、耐熱
性を要する用途に好適なものである。In the cartridge filter of the present invention, the tubular filtration layer wound on the liquid-permeable core tube is made of splittable conjugate fiber in which the first component is polypropylene and the second component is polymethylpentene copolymer. Thickness of both components divided 0.5
A non-woven fabric containing at least 50% by weight of ultrafine fibers having a denier or less, and having a fiber density of 0.18 in the filtration layer.
Because it is ~0.35g / cm 3, when applied to a filter for passing fluid filtered toward the center portion of the filtrate from the outer surface,
Fine solids having a relatively small particle size in the liquid to be filtered can also be collected, and high precision filtration can be achieved. Moreover, since the ultrafine fibers of the filtration layer have the highest melting point of α-polyolefin, they are suitable for applications requiring chemical resistance and heat resistance.
【図１】本発明のカートリッジフィルターの斜視図であ
る。FIG. 1 is a perspective view of a cartridge filter of the present invention.
【図２】分割型複合繊維の一例を示した繊維断面図であ
る。FIG. 2 is a fiber cross-sectional view showing an example of a splittable conjugate fiber.
１ カートリッジフィルター ２ 濾過層 ３ 多孔性芯筒 ５ 分割型複合繊維 ６ Ａ成分 ７ Ｂ成分 1 Cartridge filter 2 Filtration layer 3 Porous core cylinder 5 Splittable conjugate fiber 6 A component 7 B component
───────────────────────────────────────────────────── フロントページの続き (72)発明者 薄井 義治 兵庫県加古郡播磨町古宮877番地 ダイワ ボウ・クリエイト株式会社播磨研究所内 (72)発明者 中野 雄介 兵庫県加古郡播磨町古宮877番地 ダイワ ボウ・クリエイト株式会社播磨研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiharu Usui 877 Komiya, Harima-cho, Kako-gun, Hyogo Daiwa Bow Create Co., Ltd. Harima Research Institute (72) Yusuke Nakano 877 Komiya, Harima-cho, Kako-gun, Hyogo Daiwa Bow・ Create Harima Institute
Claims (1)
が、第１成分がポリプロピレン、第２成分がポリメチル
ペンテンコポリマーからなる分割型複合繊維の両成分が
分割された太さ0.5 デニール以下の極細繊維を少なくと
も５０重量％含有してなる不織布であり、その濾過層の
繊維密度が０．１８〜０．３５g/cm3 であることを特徴
とするカートリッジフィルター。1. A tubular filtration layer wound on a liquid-permeable core tube, wherein a first component is polypropylene and a second component is a splittable conjugate fiber composed of polymethylpentene copolymer. A cartridge filter characterized in that it is a non-woven fabric containing at least 50% by weight of ultrafine fibers having a denier of 0.5 or less, and the fiber density of its filtration layer is 0.18 to 0.35 g / cm 3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3339999A JPH05146614A (en) | 1991-11-28 | 1991-11-28 | Cartridge filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3339999A JPH05146614A (en) | 1991-11-28 | 1991-11-28 | Cartridge filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05146614A true JPH05146614A (en) | 1993-06-15 |
Family
ID=18332779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3339999A Pending JPH05146614A (en) | 1991-11-28 | 1991-11-28 | Cartridge filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05146614A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890077A (en) * | 1994-06-30 | 1999-03-30 | Fujitsu Limited | Mobile terminal selectively operable with a booster and mobile communication system |
| EP1076121A1 (en) * | 1999-08-10 | 2001-02-14 | Fiber Innovation Technology, Inc. | Splittable multicomponent polyolefin fibers |
-
1991
- 1991-11-28 JP JP3339999A patent/JPH05146614A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5890077A (en) * | 1994-06-30 | 1999-03-30 | Fujitsu Limited | Mobile terminal selectively operable with a booster and mobile communication system |
| EP1076121A1 (en) * | 1999-08-10 | 2001-02-14 | Fiber Innovation Technology, Inc. | Splittable multicomponent polyolefin fibers |
| US6461729B1 (en) | 1999-08-10 | 2002-10-08 | Fiber Innovation Technology, Inc. | Splittable multicomponent polyolefin fibers |
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