JPH07163819A - Composite filter medium - Google Patents
Composite filter mediumInfo
- Publication number
- JPH07163819A JPH07163819A JP5313503A JP31350393A JPH07163819A JP H07163819 A JPH07163819 A JP H07163819A JP 5313503 A JP5313503 A JP 5313503A JP 31350393 A JP31350393 A JP 31350393A JP H07163819 A JPH07163819 A JP H07163819A
- Authority
- JP
- Japan
- Prior art keywords
- melt
- filter medium
- nonwoven fabric
- intermediate layer
- composite filter
- 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
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Filtering Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、メルトブロー複合化技
術を駆使し得られる濾材に関するものであり、とりわけ
空調用濾材として適したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter medium obtained by making full use of melt-blowing composite technology, and is particularly suitable as a filter medium for air conditioning.
【０００２】[0002]
【従来の技術】メルトブローを使った濾材としては、そ
れ単体では腰が弱く実用上問題があるため一般的には支
持体と接着接合の手段を用いて適用してきた。2. Description of the Related Art As a filter medium using melt blow, it has been generally applied by using a support and an adhesive bonding means because it has a weak rigidity and has a problem in practical use.
【０００３】しかし、この方法の問題点は加工による欠
点増加と濾材コストが高くなることであり、これを解決
するため各種検討がなされてきた。例えば、特開昭６３
−３１９０１５号公報あるいはメルトブローと支持体が
同素材の場合、極細メルトブロー上に極太メルトブロー
を噴射し熱融着により複合化する方法が公知技術として
既に提案されている。However, the problems of this method are that the defects increase due to processing and the cost of the filter medium increases, and various studies have been made to solve these problems. For example, JP-A-63
No. 319,015, or a method in which a melt blow and a support are made of the same material, a method of spraying a very thick melt blow on a very fine melt blow and forming a composite by heat fusion has been already proposed.
【０００４】しかし前者の方法では、メルトブローの繊
維は支持体層上に堆積するだけで互いの層間での絡み合
いによる接着力は不十分であり実用上問題がある。In the former method, however, the meltblown fibers are merely deposited on the support layer, and the adhesive force due to the entanglement between the layers is insufficient, which is a practical problem.
【０００５】これに比べ後者の方法では、融着による接
着力も十分であり取扱い性も良好でこの面では改良され
ているが製布条件的に融着による接着力を出そうとすれ
ばする程極細メルトブローの繊維を溶融することになり
繊維形態を消失させるばかりでなく溶融物が層間面でフ
ィルム化して濾材としての圧力損失を上昇させフィルタ
ー濾材として極めて致命的な欠陥を合わせ持ったもので
あった。On the other hand, in the latter method, the adhesive force by fusion bonding is sufficient and the handleability is good, and it is improved in this respect. Not only does the fiber of the ultrafine meltblown melt and the fiber morphology disappears, but the melt also forms a film on the interlaminar surface to increase the pressure loss as a filter medium, which also has extremely fatal defects as a filter medium. It was
【０００６】[0006]
【発明が解決しようとする課題】本発明は、この様な従
来技術の問題点を解消しフィルター濾材として生産性が
よく高性能な物を提供することを目的とするものであ
る。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide a filter medium having high productivity and high performance.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記目的を次
のような手段により解決するものである。すなわち、本
発明の複合濾材は、メルトブロー不織布Ａに中間層Ｂを
噴射積層し、該表面にメルトブロー不織布Ｃをさらに噴
射して得られる融着積層捕集シートにおいて、平均繊維
径がＡ＜Ｂ＜Ｃの範囲であることを特徴とする複合濾
材。The present invention solves the above object by the following means. That is, the composite filter medium of the present invention is a fusion-bonded collecting sheet obtained by jet-laminating the intermediate layer B on the melt-blown non-woven fabric A, and further jetting the melt-blown non-woven fabric C on the surface thereof, wherein the average fiber diameter is A <B < A composite filter medium having a C range.
【０００８】[0008]
【作用】本発明による複合濾材の製造方法を図１及び図
２を用い工程順に説明すれば以下の通りである。まず、
公知なメルトブロー製布技術により平均繊維径が５μ以
下の極細メルトブロー不織布１を作る。The method of manufacturing the composite filter medium according to the present invention will be described in the order of steps with reference to FIGS. 1 and 2. First,
An ultrafine meltblown non-woven fabric 1 having an average fiber diameter of 5 μm or less is produced by a known meltblowing technique.
【０００９】次に該極細メルトブロー不織布１は、図２
の７に示す供給ロールとして設置し、捕集ドラムに供給
する。その上方より中間層２となるメルトブローを噴射
し融着積層捕集シートを得、８により巻き取られる。Next, the extra fine melt blown nonwoven fabric 1 is shown in FIG.
It is installed as a supply roll shown in No. 7 and is supplied to the collecting drum. From above, a melt blow to form the mid layer 2 is jetted to obtain a fusion-bonded laminated collection sheet, which is wound by 8.
【００１０】再度、巻き取られた積層捕集シートの中間
層が上方になる様７に設置し捕集ドラム上に供給する。
上方より支持体層としての役目を持つ極太メルトブロー
を噴射し、支持体層と濾過層を持ち、且つ適度な融着状
態により構成された複層融着積層捕集シートを得る。Again, the wound laminated collection sheet is set at 7 so that the intermediate layer is on the upper side, and is supplied onto the collection drum.
An extra-thick melt blow functioning as a support layer is jetted from above to obtain a multi-layer fusion-laminated collection sheet having a support layer and a filtration layer and having a proper fusion state.
【００１１】該メルトブロー不織布を構成する素材とし
てはポリオレフィン系、ポリエステル系、ポリカーボネ
ート等熱可塑性ポリマーであれば特に限定されるもので
はない。ここで極細メルトブロー１の平均繊維径は５μ
以下であるが、より好ましくは３μ〜０．５μである。
０．３μ以下の繊維径を得るにはメルトブロー法では合
理的ではない、また５μ以上では十分なフィルター性能
が得られないため高性能フィルターとして適さない。The material constituting the meltblown non-woven fabric is not particularly limited as long as it is a thermoplastic polymer such as polyolefin, polyester or polycarbonate. Here, the average fiber diameter of the extra fine melt blow 1 is 5μ.
It is below, but more preferably 3 μm to 0.5 μm.
The melt blow method is not rational for obtaining a fiber diameter of 0.3 μm or less, and if it is 5 μm or more, sufficient filter performance cannot be obtained, and therefore it is not suitable as a high performance filter.
【００１２】さらにメルトブロー不織布の目付は５ g／
m2 〜８０ g／ m2 が好ましい。目付が５ g／ m2 未満
になるとフィルター性能が実用上不足し８０ g／ m2 を
超えると圧力損失が大きくなり例えば空調用に使用した
場合には必要以上の大きな送風機を要求しそのため騒音
の増大と装置のコンパクト化に問題が生じ好ましくな
い。Furthermore, the basis weight of the meltblown nonwoven fabric is 5 g /
m 2 to 80 g / m 2 is preferred. When the basis weight is less than 5 g / m 2 , the filter performance is practically insufficient, and when it exceeds 80 g / m 2 , the pressure loss becomes large, and when it is used for air conditioning, for example, a larger blower is required, which causes noise There is a problem in increasing the size and making the device compact, which is not preferable.
【００１３】一方、支持体層となる極太メルトブロー３
の平均繊維径は好ましくは２０μ以上であるが、より好
ましくは２５μ〜５０μである。平均繊維径が２０μ以
下になると腰が弱くなり支持体層としての条件を果たさ
なくなる。また、平均繊維径が５０μ以上になるとメル
トブローの製法から考え合理的といえない。On the other hand, extra-thick melt blow 3 which becomes a support layer
The average fiber diameter is preferably 20 μ or more, more preferably 25 μ to 50 μ. When the average fiber diameter is 20 μm or less, the stiffness becomes weak and the condition as the support layer cannot be fulfilled. Further, when the average fiber diameter is 50 μm or more, it is not rational considering the melt-blowing method.
【００１４】次に本発明の中間層の説明をする。従来技
術では、前記したように極細メルトブロー１に支持体層
としての機能を果たすため極太メルトブロー３を噴射し
未固化状態で融着積層し２層構造の濾材を得ていた。し
かしながら、この技術により製造される濾材の欠点はフ
ィルター性能から要求される極細メルトブローの繊維径
と支持体層としての機能から要求される極太メルトブロ
ーの繊維径があまりにもその差が大きいため、極太メル
トブローの噴射により融着積層される際問題なのは、必
然的に極太なるがゆえに必要以上の熱容量を持ち、その
ため必要以上に極細メルトブローを溶融させてしまうこ
とになり、場合によっては溶融物は融着面でフィルム化
し濾材としては致命的な極端な圧力損失を招く問題を持
っていた。 そこで、この中間層２は過度の溶融を押さ
える目的で考え出されたものであり、極太メルトブロー
を噴射する前に該極細メルトブローと極太メルトブロー
の中間の繊維径を持ったメルトブローを一旦噴射し積層
捕集シートを得ることにある。 この様な方法により、
互いの融着面での繊維径差が小さくなり溶融程度が緩和
されフィルターとして致命的となる過溶融が防止できる
ことを見出だしたのである。Next, the intermediate layer of the present invention will be described. In the prior art, as described above, in order to fulfill the function as a support layer on the extra fine melt blow 1, the extra thick melt blow 3 was jetted and fusion-laminated in an unsolidified state to obtain a two-layer structure filter medium. However, the drawback of the filter media produced by this technology is that the difference between the fiber diameter of the extra-fine melt blow required for the filter performance and the fiber diameter of the extra-thick melt blow required for the function as the support layer is so large that the extra-thick melt blow is performed. The problem with fusion-laminating due to the injection of is that it inevitably becomes extremely thick, so it has a heat capacity that is more than necessary, and as a result, it melts the extra-fine meltblown more than necessary. However, there was a problem that the film was formed into a film, which caused a fatal extreme pressure loss as a filter medium. Therefore, this intermediate layer 2 was devised for the purpose of suppressing excessive melting, and before the injection of the extra-thick melt blow, a melt blow having a fiber diameter intermediate between the extra-thin melt blow and the extra-thick melt blow is once injected and the laminated layer is captured. To get a collection sheet. By this method,
It has been found that the difference in fiber diameter between the fused surfaces is reduced, the degree of melting is alleviated, and over-melting, which is fatal as a filter, can be prevented.
【００１５】この様な目的から中間層の繊維径として
は、極細メルトブロー繊維径の１．１〜１０．０倍が好
ましい。繊維径がこの範囲より小さくなると極細メルト
ブローと同等となり意味をなさないし、これ以上となる
と過溶融現象が発生し好ましくない。また目付について
も同じ目的からあまり大きな目付は必要とせず、１０〜
８０g／ m2 が好ましい。中間層２は１層でもよいし、
多層に分割してもよい。For this purpose, the fiber diameter of the intermediate layer is preferably 1.1 to 10.0 times the ultrafine meltblown fiber diameter. When the fiber diameter is smaller than this range, it becomes equivalent to the ultrafine melt blowing and is meaningless. Also for the basis weight, it does not require a very large basis weight for the same purpose.
80 g / m 2 is preferred. The intermediate layer 2 may be a single layer,
It may be divided into multiple layers.
【００１６】ここで中間層の目的から該極細メルトブロ
ーと中間層は直接接着していなくてもよい。つまり中間
層として構成するメルトブローの製布条件を積層捕集す
る時点では既に繊維は固化している状態で積層捕集して
もよいし、あるいは中間層としての性能を満たすメルト
ブロー不織布をあらかじめ製布しておき、該極細メルト
ブローと重ね合わせてメルトブロー装置の捕集ドラムに
供給してもよい。結果的に極太メルトブローが中間層メ
ルトブローを貫通して該極細メルトブローと融着すれば
それでも十分目的を満足する濾材を得ることができる。Here, for the purpose of the intermediate layer, the ultrafine meltblown and the intermediate layer may not be directly bonded. That is, at the time of collecting and collecting the melt-blowing fabric forming conditions as the intermediate layer, the fibers may be already collected and laminated and collected, or a melt-blown nonwoven fabric satisfying the performance as the intermediate layer is prepared beforehand. Alternatively, it may be supplied to the collecting drum of the melt blower in an overlapping manner with the ultrafine melt blow. As a result, if the extra-thick melt blow penetrates the intermediate layer melt blow and is fused with the extra-fine melt blow, it is possible to obtain a filter medium sufficiently satisfying the purpose.
【００１７】また、中間層の材料としてはメルトブロー
不織布でなくても他の製布手段を用いた例えば短繊維不
織布、スパンボンド、織布等であってもよい。Further, the material for the intermediate layer may not be a melt blown non-woven fabric, but may be, for example, a short fiber non-woven fabric, a spun bond, a woven fabric or the like using other fabric making means.
【００１８】本発明により製造される濾材は、単層とし
て使用してもよいし、山谷折りした状態で使用してもよ
い。特に、空調用途等大気塵を捕捉する用途には効果的
であり、長寿命化が期待できる。つまり、図３に示す様
に一般的に空調用途の寿命とは、フィルターの最終圧力
損失が決っているからフィルターの初期圧力損失との間
が使用可能範囲となる。The filter medium produced by the present invention may be used as a single layer or may be used in a mountain-folded state. In particular, it is effective for applications such as air-conditioning applications that capture atmospheric dust, and can be expected to have a long life. That is, as shown in FIG. 3, in general, the service life range for air conditioning is between the initial pressure loss of the filter and the initial pressure loss of the filter since the final pressure loss of the filter is determined.
【００１９】長期間大気を吸引し、フィルターに大気塵
を捕捉した時圧力損失は上昇し始めるが、その大気塵に
よる圧力損失上昇を出来るだけ抑えるためには大気塵を
フィルターの持っている体積全体で捕捉するのが最も効
率がよい。When the air is sucked in for a long period of time and the air dust is captured by the filter, the pressure loss starts to increase. However, in order to suppress the pressure loss increase due to the air dust as much as possible, the air dust is contained in the entire volume of the filter. It is most efficient to capture at.
【００２０】しかしながら従来法で得られる濾材は上述
したように積層界面での過溶融部のため極端な緻密層に
なっており、この部分で大気塵による目詰まりが激しく
急激な圧力損失上昇を生じてしまい早期に最終圧力損失
に達してしまい実用上採用出来るものではなかった。However, the filter medium obtained by the conventional method has an extremely dense layer due to the overmelted portion at the laminated interface as described above, and clogging due to atmospheric dust at this portion causes a sharp increase in pressure loss. Since it reached the final pressure loss early, it was not practically applicable.
【００２１】山谷折りの方法としては、規格型ＨＥＰＡ
に見られるシングルプリーツ型、またはダブルプリーツ
型、あるいはシングルプリーツ型の改良型である低融点
ポリマーを線状に塗布することにより、この肉厚をスペ
ーサーとして利用したミニプリーツ型等が主として利用
できる。いずれの型式においても山／山間の折りピッチ
としては１mm〜１０mm、好ましくは２mm〜５mmがよい。As a method of folding a mountain valley, a standard HEPA is used.
A single pleat type, a double pleat type, or an improved type of the single pleat type, which is seen in (1), is linearly applied, so that a minipleat type or the like that uses this wall thickness as a spacer can be mainly used. In any type, the ridge-to-ridge folding pitch is 1 mm to 10 mm, preferably 2 mm to 5 mm.
【００２２】本発明により製造される濾材のフィルター
性能をさらに高める手段としてエレクトレット加工が推
奨される。かかるエレクトレット加工方法としては、公
知な方法でよく例えば一般的な方法として一方がアース
極である平板あるいはロールとその上方１cm〜２０cmに
設置される針状あるいは線状の電極間に複合濾材をアー
ス極と接する様に通し、高圧の直流電圧を印荷すること
により行われ、表面電荷密度として１×１０-11 c／cm
2 〜１×１０-8 c／cm2 を保持させるものである。エレ
クトレットは積層シートとして実施してもよいし、ある
いは極細メルトブローのみあらかじめエレトクレット加
工しておき、この物に上記方法により積層噴射してもよ
い。Electret processing is recommended as a means for further enhancing the filter performance of the filter media produced by the present invention. As such an electret processing method, a known method may be used. For example, as a general method, a composite filter medium is grounded between a flat plate or roll, one side of which is an earth electrode, and a needle-shaped or linear electrode installed 1 cm to 20 cm above it. It is conducted by passing it in contact with the pole and applying a high-voltage DC voltage. The surface charge density is 1 × 10 -11 c / cm.
It holds 2 to 1 × 10 −8 c / cm 2 . The electret may be embodied as a laminated sheet, or only the ultrafine melt blow may be subjected to electret processing in advance and laminated injection may be performed on this material by the above method.
【００２３】[0023]
【実施例】以下、本発明の実施例を示す。EXAMPLES Examples of the present invention will be shown below.
【００２４】実施例中の捕集効率は０．３μの粒子径を
持つポリスチレンラテックスを供給して行い、上流側お
よび下流側の粒子数をリオン社製ダストカウンター（Ｋ
Ｃ−０１Ｂ）によりカウントし下式により算出した。The collection efficiency in the examples was carried out by supplying polystyrene latex having a particle size of 0.3 μ, and the number of particles on the upstream side and the downstream side was measured by a dust counter (K
C-01B) was counted and calculated by the following formula.
【００２５】捕集効率（％）＝（１−下流側の数／上流
側の数）×１００ 圧力損失は、上流側と下流側の圧力差を山本電機製マノ
スターゲージ（ＷＯ−８０）により計測した。Collection efficiency (%) = (1-number of downstream side / number of upstream side) × 100 As for pressure loss, the pressure difference between the upstream side and the downstream side is measured by Yamamoto Electric Manostar Gauge (WO-80). Measured.
【００２６】また、メルトブロー不織布の平均繊維径の
計測は走査型電子顕微鏡により不織布の断面を撮影し、
いわゆるショット部分を除いた繊維についてその直径を
計り算術平均により求めた。The average fiber diameter of the meltblown nonwoven fabric is measured by scanning the cross section of the nonwoven fabric with a scanning electron microscope.
The diameter of the fiber excluding the so-called shot portion was measured, and the fiber diameter was determined by arithmetic average.
【００２７】実施例１ メルトインデックス１００のポリプロピレンを用いて、
図２に示すメルトブロー製布装置により供給シート７
を、予め同装置により平均繊維径３μとなるよう製布さ
れた目付２０ g／ m2 のメルトブロー不織布を用い、ス
テンレス金網製捕集ドラムの回転により搬送され上方よ
り中間層となる平均繊維径１８μ、目付２０ g／ m2 の
メルトブロー不織布を噴射し積層捕集シート８を得た。Example 1 Using polypropylene having a melt index of 100,
The supply sheet 7 is produced by the melt-blowing cloth making apparatus shown in FIG.
Using a melt-blown non-woven fabric with a basis weight of 20 g / m 2 that was previously made by the same apparatus so that the average fiber diameter was 3 μ, the average fiber diameter of 18 μ was conveyed from above by the rotation of the stainless steel wire net collection drum and became the intermediate layer. Then, a melt blown non-woven fabric having a basis weight of 20 g / m 2 was jetted to obtain a laminated collection sheet 8.
【００２８】中間層の製布条件としては、紡糸温度を３
１０℃とし、口金ビッチ１．０mm、口金孔径０．３mm
φ、孔数１３００の一列に配列された口金より０．６KG
／min の吐出量で押し出し、熱風を２６０℃、０．３Kg
／cm2 噴射した。この時の口金からの捕集距離は６０cm
に設定した。As the cloth-making conditions for the intermediate layer, the spinning temperature is 3
10 ° C, mouthpiece bitch 1.0mm, mouthpiece hole diameter 0.3mm
φ, the number of holes is 1300, 0.6KG from the base arranged in a row
Extruded with a discharge rate of / min, hot air at 260 ℃, 0.3Kg
/ Cm 2 was sprayed. The collection distance from the base at this time is 60 cm
Set to.
【００２９】次に積層捕集シート８を供給シート７とな
るよう本装置に設置した。Next, the laminated collection sheet 8 was set in this apparatus so as to serve as the supply sheet 7.
【００３０】中間層を設ける時と同様に骨材となる平均
繊維径２５μ、目付６０ g／ m2 のメルトブロー不織布
を噴射しトータル目付１００ g／ m2 の積層捕集濾材を
得た。得られた濾材をエレクトレット加工するため印荷
電極間、つまりアース極に接続されたローラーとその上
方７cmの間に供給し印荷電圧４０KV、走行速度３０ m／
min で行った。この様にして得られた濾材の初期フィル
ター性能は、風速４ m／min の条件で捕集効率が７８
％、圧力損失は１．５mmAqであった。As in the case of providing the intermediate layer, a melt-blown nonwoven fabric having an average fiber diameter of 25 μ and a basis weight of 60 g / m 2 was jetted to obtain a laminated collection filter medium with a total basis weight of 100 g / m 2 . In order to perform electret processing on the obtained filter medium, it is supplied between the load electrodes, that is, between the roller connected to the earth electrode and 7 cm above it, and the load voltage is 40 KV and the running speed is 30 m /
I went at min. The filter material thus obtained had an initial filter performance of 78% at a wind speed of 4 m / min.
%, The pressure loss was 1.5 mmAq.
【００３１】また、長期寿命性能はフィルターユニット
により行った。フィルターユニットは本濾材より構成さ
れ、６１０×６１０×１５０サイズで山数を６１山とし
たユニットに組み立て、定格風量５０ m3 ／min で評価
した。その結果、図３に示すように極めて長寿命性能を
示した。The long-term life performance was measured by a filter unit. The filter unit was composed of the present filter material, assembled into a unit having a size of 610 × 610 × 150 and a number of peaks of 61, and evaluated at a rated air volume of 50 m 3 / min. As a result, as shown in FIG. 3, extremely long life performance was exhibited.
【００３２】実施例２ 供給シート７を極細メルトブロー不織布とその上層に中
間層不織布を重ね合わせの状態で供給した以外実施例１
と同様に行った。Example 2 Example 1 except that the supply sheet 7 was supplied in the state of superfine melt-blown non-woven fabric and the intermediate layer non-woven fabric superposed on it.
I went the same way.
【００３３】このものの初期フィルター性能は、風速４
m／min の条件で捕集効率が７８％、圧力損失は１．３
mmAqであった。また、長期寿命性能は同様の方法で行っ
た結果、図３に示すように極めて長寿命性能を示した。The initial filter performance of this product is 4
The collection efficiency is 78% and the pressure loss is 1.3 at m / min.
It was mmAq. Moreover, as a result of performing the long-term life performance by the same method, as shown in FIG. 3, extremely long life performance was exhibited.
【００３４】比較例１ 実施例１と同様の目付２０ g／ m2 の極細メルトブロー
不織布に中間層は設けず直接極太メルトブロー不織布目
付８０ g／ m2 を噴射し２層構造の全体として目付１０
０ g／ m2 の積層捕集シートを得た。COMPARATIVE EXAMPLE 1 An ultra-thin melt-blown nonwoven fabric having a basis weight of 20 g / m 2 similar to that of Example 1 was directly sprayed with 80 g / m 2 of a very thick melt-blown nonwoven fabric without providing an intermediate layer.
A laminated collection sheet of 0 g / m 2 was obtained.
【００３５】このものの初期フィルター性能は、風速４
m／min の条件で捕集効率が６４％、圧力損失は２．７
mmAqであった。また、長期寿命性能は同様の方法で行っ
た結果、図３に示すように極めて寿命の短いものであっ
た。The initial filter performance of this product is 4
Collection efficiency is 64% and pressure loss is 2.7 at m / min.
It was mmAq. As a result of the same method, the long-term life performance was extremely short as shown in FIG.
【００３６】[0036]
【発明の効果】本発明により製造される濾材は、メルト
ブロー製布装置を使った多層構造であっても複合工程を
必要としない合理的な方法により得られる空調用に適し
た積層シートであり、かつノンバインダーであることか
ら安価に製造することができるという特長をもち、かつ
従来の２層構造ではどうしても達し得なかった融着面の
過溶融による欠点である目詰まりによる圧力損失の急激
な上昇に起因する寿命の短命化を解消するものであり、
つまり極細メルトブロー層と極太メルトブロー層の間に
中間層を設けることにより各層間の融着状態を適性化す
ることができ圧力損失の急激な上昇もなく長寿命化を達
成でき、安価でかつ高性能な濾材を得るものである。EFFECTS OF THE INVENTION The filter medium produced by the present invention is a laminated sheet suitable for air conditioning obtained by a rational method which does not require a composite process even if it has a multi-layer structure using a melt-blowing cloth making apparatus, Moreover, it is a non-binder and can be manufactured at low cost, and the pressure loss due to clogging, which is a drawback due to overmelting of the fusion surface that could not be achieved by the conventional two-layer structure, suddenly increases. It is intended to eliminate the shortening of life due to
In other words, by providing an intermediate layer between the ultra-thin melt-blown layer and the extra-thick melt-blown layer, it is possible to optimize the fusion state between the layers and achieve a long service life without a sudden increase in pressure loss, which is inexpensive and has high performance. To obtain a simple filter medium.
【図１】この図は、本発明である複合濾材の断面図であ
る。FIG. 1 is a sectional view of a composite filter medium according to the present invention.
【図２】この図は、本発明である複合濾材の製造装置で
ある。FIG. 2 is an apparatus for producing a composite filter medium according to the present invention.
【図３】この図は、寿命性能特性図である。FIG. 3 is a life performance characteristic diagram.
１：極細メルトブロー不織布 ２：中間層 ３：極太メルトブロー不織布 ４：エクストルーダー ５：サクション ６：捕集ドラム ７：供給シート ８：積層捕集シート 1: Extra fine melt blown nonwoven fabric 2: Intermediate layer 3: Extra thick melt blown nonwoven fabric 4: Extruder 5: Suction 6: Collection drum 7: Supply sheet 8: Laminated collection sheet
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｄ０４Ｈ 3/16 Ｄ０６Ｍ 10/00 // Ｄ０６Ｍ 101:20 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location D04H 3/16 D06M 10/00 // D06M 101: 20
Claims (6)
層し、該表面にメルトブロー不織布Ｃをさらに噴射して
得られる融着積層捕集シートにおいて、平均繊維径がＡ
＜Ｂ＜Ｃの範囲であることを特徴とする複合濾材。1. A fusion-bonded collecting sheet obtained by jet-laminating an intermediate layer B on a melt-blown non-woven fabric A and further jetting a melt-blown non-woven fabric C on the surface thereof, wherein the average fiber diameter is A.
A composite filter medium having a range of <B <C.
μ以下の極細繊維である請求項１記載の複合濾材。2. A melt-blown nonwoven fabric A having an average fiber diameter of 5
The composite filter medium according to claim 1, which is an ultrafine fiber having a size of μ or less.
μ以上の極太繊維である請求項１記載の複合濾材。3. A melt-blown non-woven fabric C having an average fiber diameter of 10
The composite filter medium according to claim 1, which is a very thick fiber of μ or more.
１０．０μの範囲で、かつ目付が１０〜８０ g／ m2 で
ある請求項１記載の複合濾材。4. The average fiber diameter of the intermediate layer B is A × 1.1 to A ×.
The composite filter medium according to claim 1, which has a basis weight of 10 to 80 g / m 2 in a range of 10.0 µ.
トレット化されているものである請求項１記載の複合濾
材。5. The composite filter medium according to claim 1, wherein at least one layer of the nonwoven fabrics A to C is electretized.
ルターユニット用である請求項１記載の複合濾材。6. The composite filter medium according to claim 1, wherein the composite filter medium is for a filter unit constructed by folding in a mountain valley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5313503A JPH07163819A (en) | 1993-12-14 | 1993-12-14 | Composite filter medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5313503A JPH07163819A (en) | 1993-12-14 | 1993-12-14 | Composite filter medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07163819A true JPH07163819A (en) | 1995-06-27 |
Family
ID=18042099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5313503A Pending JPH07163819A (en) | 1993-12-14 | 1993-12-14 | Composite filter medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07163819A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997023267A1 (en) * | 1995-12-22 | 1997-07-03 | Kimberly-Clark Worldwide, Inc. | Laminate filter media |
| WO2000062899A1 (en) * | 1999-04-19 | 2000-10-26 | Filterwerk Mann+Hummel Gmbh | Multilayer filter element |
| JP2002316012A (en) * | 2001-04-17 | 2002-10-29 | Nippon Muki Co Ltd | Washing regenerative air filter |
| WO2004082805A1 (en) * | 2003-03-20 | 2004-09-30 | Ambic Co., Ltd. | Nonwoven fabric air filter for internal combustion engine |
| US7063917B2 (en) * | 2001-02-21 | 2006-06-20 | Ahlstrom Mount Holly Springs, Llc | Laminated battery separator material |
| CN100455926C (en) * | 2005-10-14 | 2009-01-28 | 日立空调·家用电器株式会社 | Pre-filter for air conditioner and air conditioner using the same |
| JP2012152706A (en) * | 2011-01-27 | 2012-08-16 | Toyota Boshoku Corp | Filter medium and manufacturing method for the same |
| JP2013504409A (en) * | 2009-09-12 | 2013-02-07 | ハイダック フィルターテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for forming a filter element having a filter medium |
| US9498939B2 (en) | 2012-08-15 | 2016-11-22 | Rockline Industries, Inc. | Meltblown-spunbonded-meltblown laminated fabric |
| CN109878431A (en) * | 2019-01-10 | 2019-06-14 | 吉林大学 | A kind of automotive compounded ceiling trim panel of high-performance environment-friendly basalt fibre/flaxen fiber reinforced resin and preparation method thereof |
-
1993
- 1993-12-14 JP JP5313503A patent/JPH07163819A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5721180A (en) * | 1995-12-22 | 1998-02-24 | Pike; Richard Daniel | Laminate filter media |
| US5873968A (en) * | 1995-12-22 | 1999-02-23 | Kimberly-Clark Worldwide, Inc. | Laminate filter media |
| EP1302230A1 (en) * | 1995-12-22 | 2003-04-16 | Kimberly-Clark Worldwide, Inc. | Laminate filter media |
| WO1997023267A1 (en) * | 1995-12-22 | 1997-07-03 | Kimberly-Clark Worldwide, Inc. | Laminate filter media |
| WO2000062899A1 (en) * | 1999-04-19 | 2000-10-26 | Filterwerk Mann+Hummel Gmbh | Multilayer filter element |
| US7063917B2 (en) * | 2001-02-21 | 2006-06-20 | Ahlstrom Mount Holly Springs, Llc | Laminated battery separator material |
| JP2002316012A (en) * | 2001-04-17 | 2002-10-29 | Nippon Muki Co Ltd | Washing regenerative air filter |
| WO2004082805A1 (en) * | 2003-03-20 | 2004-09-30 | Ambic Co., Ltd. | Nonwoven fabric air filter for internal combustion engine |
| CN100455926C (en) * | 2005-10-14 | 2009-01-28 | 日立空调·家用电器株式会社 | Pre-filter for air conditioner and air conditioner using the same |
| JP2013504409A (en) * | 2009-09-12 | 2013-02-07 | ハイダック フィルターテヒニク ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for forming a filter element having a filter medium |
| JP2012152706A (en) * | 2011-01-27 | 2012-08-16 | Toyota Boshoku Corp | Filter medium and manufacturing method for the same |
| US9498939B2 (en) | 2012-08-15 | 2016-11-22 | Rockline Industries, Inc. | Meltblown-spunbonded-meltblown laminated fabric |
| CN109878431A (en) * | 2019-01-10 | 2019-06-14 | 吉林大学 | A kind of automotive compounded ceiling trim panel of high-performance environment-friendly basalt fibre/flaxen fiber reinforced resin and preparation method thereof |
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