JP2001340716A - Filter and its manufacturing method - Google Patents
Filter and its manufacturing methodInfo
- Publication number
- JP2001340716A JP2001340716A JP2000165630A JP2000165630A JP2001340716A JP 2001340716 A JP2001340716 A JP 2001340716A JP 2000165630 A JP2000165630 A JP 2000165630A JP 2000165630 A JP2000165630 A JP 2000165630A JP 2001340716 A JP2001340716 A JP 2001340716A
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- Prior art keywords
- filter
- melt
- nonwoven fabric
- mixed
- fiber
- 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.)
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- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空気調整機等に送
る空気や、人間等に吸引される空気から粉塵，塵埃，花
粉，霧状の微粒子等（以下「粉塵等」という）を除去す
るフィルタ、特に、慣性，遮りの濾過作用と静電気とに
よって粉塵等を捕集するエレクトレットフィルタ及びそ
の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention removes dust, dust, pollen, mist-like fine particles (hereinafter referred to as "dust") from air sent to an air conditioner or the like or air sucked by a person or the like. The present invention relates to a filter, and more particularly to an electret filter that collects dust and the like by inertia, a filtering action of shielding, and static electricity, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】従来、ポリプロピレン系合成樹脂等をメ
ルトブロー紡糸したメルトブロー不織布からなるエレク
トレットフィルタ（以下「メルトブロー不織布のエレク
トレットフィルタ」という）は、繊維径が極細で、繊維
間距離が狭い、即ち空隙率が小さくて、粉塵等を捕集す
る性能（以下「捕集効率」という）が高い上、繊維は成
形，溶着等の後加工が容易な性質を有するため、プレフ
ィルタ層，捕集フィルタ層及び保型フィルタ層を積層し
た状態で加熱成形して型抜きする使い捨ての防塵マスク
等の捕集フィルタ層として主に使用されている。2. Description of the Related Art Conventionally, an electret filter comprising a melt-blown nonwoven fabric obtained by melt-blowing a polypropylene-based synthetic resin or the like (hereinafter referred to as "meltblown nonwoven fabric electret filter") has a very small fiber diameter and a small inter-fiber distance, that is, a porosity. Is small, has high performance of collecting dust and the like (hereinafter referred to as “collection efficiency”), and has a property that the fiber is easily processed after forming and welding, so that the pre-filter layer, the collection filter layer and It is mainly used as a collecting filter layer such as a disposable dust-proof mask which is formed by heating and molding in a state in which the filter retaining layer is laminated.
【０００３】又、羊毛とポリエステル等の合成繊維とを
混合した不織布に特殊な樹脂を付着させた上、機械的二
次加工を施して繊維に帯電加工した不織布からなるエレ
クトレットフィルタ（以下「帯電加工不織布のエレクト
レットフィルタ」という）〔特公平３−３１４８３号公
報及び特公平３−６３４０６号公報参照〕は、厚みのあ
るフィルタ層全体で粉塵等を捕集するため、粉塵等の保
持容量が大きい上、通気時の圧力損失（以下「通気抵
抗」という）の上昇も緩やかなので、取替式マスク等の
捕集フィルタとして主に使用されている。An electret filter (hereinafter referred to as “charging process”) made of a nonwoven fabric in which a special resin is adhered to a nonwoven fabric obtained by mixing wool and synthetic fibers such as polyester and then subjected to mechanical secondary processing to charge the fibers. The non-woven fabric electret filter ”(see Japanese Patent Publication No. 3-31483 and Japanese Patent Publication No. 3-63406) collects dust and the like in the entire thick filter layer, and therefore has a large holding capacity for dust and the like. Since the pressure loss during ventilation (hereinafter referred to as "venting resistance") also increases slowly, it is mainly used as a collection filter for a replaceable mask or the like.
【０００４】ところで、一般的に、エレクトレットフィ
ルタは、粉塵等を含む空気を通し続ける試験を行うと、
粉塵等が静電作用によりフィルタに吸着，捕集されて、
粉塵等の保持量或いは堆積量が増加するが、接触した粉
塵等によって帯電した繊維が放電してしまうため、静電
気が次第に低下して、捕集効率が低下する傾向にあるも
のの、粉塵等が保持されたり、堆積して、エレクトレッ
トフィルタが目詰りしてくると、目詰りによる濾過作用
が起きて、捕集効率が逆に上昇し始める特性があり、こ
の捕集効率が低下から上昇に転ずるときのボトム値がこ
の特性における最小捕集効率となる。By the way, in general, when an electret filter is subjected to a test of continuously passing air containing dust and the like,
Dust, etc. is adsorbed and collected on the filter by electrostatic action,
The amount of retained or deposited dust increases, but the charged fibers are discharged by the contacted dust and the like, so the static electricity gradually decreases and the collection efficiency tends to decrease. When the electret filter is clogged or accumulated and clogged, a filtering action due to the clogging occurs and the collection efficiency starts to increase, and when the collection efficiency turns from a decrease to an increase. Is the minimum collection efficiency in this characteristic.
【０００５】又、エレクトレットフィルタは、空気の流
れが早くなると、粉塵等の捕集効率が低下するので、フ
ィルタの空隙率を低下させて、濾過作用を大きくする必
要がある。[0005] In the electret filter, when the flow of air becomes faster, the efficiency of collecting dust and the like is reduced. Therefore, it is necessary to reduce the porosity of the filter and increase the filtering action.
【０００６】そこで、繊維がウェッブ状態で、空隙率が
高すぎて、フィルタとしてそのまま使用することができ
ない帯電加工不織布のエレクトレットフィルタは、ニー
ドルパンチング法で繊維を上下に絡ませてフェルト状に
加工することにより、空隙率を低下させることが行われ
ている。Accordingly, electret filters made of non-charged nonwoven fabric which cannot be used as a filter because the fibers are in a web state and the porosity is too high, are formed by entangled the fibers up and down by a needle punching method and processed into a felt shape. Thus, the porosity is reduced.
【０００７】[0007]
【発明が解決しようとする課題】ところで、メルトブロ
ー不織布のエレクトレットフィルタは、粉塵等をフィル
タの表面で集中的に捕集するため、フィルタの表面が短
時間に目詰まりして、フィルタ内部に粉塵等を保持でき
ないという課題と、フィルタの目詰りにより通気が阻害
されて、通気抵抗が急激に上昇するため、長時間の使用
に耐えられないという課題があった。However, in the electret filter made of a melt-blown nonwoven fabric, dust and the like are intensively collected on the surface of the filter. There is a problem that the filter cannot be maintained and a problem that the filter cannot be used for a long time because the filter is clogged and the ventilation is hindered, and the ventilation resistance increases rapidly.
【０００８】このエレクトレットフィルタの課題を解決
するには、フィルタの面積を拡大すれば、ある程度改善
できるが、例えば、人間の顔面に着ける使い捨ての防塵
マスクであれば、その拡大できる面積にも自ずと限度が
あり、この課題の根本的な解決策とはならない。In order to solve the problem of the electret filter, the area can be improved to some extent by enlarging the area of the filter. For example, in the case of a disposable dust mask which can be worn on a human face, the area which can be expanded is naturally limited. This is not a fundamental solution to this problem.
【０００９】又、帯電加工不織布のエレクトレットフィ
ルタは、捕集フィルタ層が厚く、繊維が樹脂加工されて
いるため、成形，溶着等の後加工が困難で、用途が限定
されるという課題がある。In addition, the electret filter made of the non-woven fabric charged has a problem that, since the collection filter layer is thick and the fibers are resin-processed, post-processing such as molding and welding is difficult, and the application is limited.
【００１０】本発明は、このような課題を解決するため
になされたもので、粉塵等の捕集効率が高く、フィルタ
内部に粉塵等を捕集して保持できる量が多くて、粉塵等
の堆積による通気抵抗の上昇が緩やかで、長時間の使用
に耐えられるフィルタを提供することを目的とするもの
である。The present invention has been made in order to solve such a problem, and has a high collection efficiency of dust and the like, and a large amount of dust and the like can be collected and held inside the filter. It is an object of the present invention to provide a filter that has a moderate rise in airflow resistance due to deposition and can withstand long-term use.
【００１１】[0011]
【課題を解決するための手段】本発明は、合成樹脂をメ
ルトブローして製造した繊維径７〜１５μｍの極細繊維
からなるエレクトレット化されたメルトブロー不織布
と、このエレクトレット化されたメルトブロー不織布
と、少なくとも繊維径１５μｍ以上の羊毛及び合成繊維
を樹脂加工して機械的に二次加工を施した帯電加工繊維
とを解繊して混合した混合ウェッブと、スパンボンド不
織布からなるプレフィルタとを順次積層したフィルタで
ある。DISCLOSURE OF THE INVENTION The present invention provides an electret melt-blown nonwoven fabric made of ultrafine fibers having a fiber diameter of 7 to 15 .mu.m produced by melt-blowing a synthetic resin; an electret meltblown nonwoven fabric; A filter obtained by sequentially laminating a mixed web obtained by defibrating and mixing a wool having a diameter of 15 μm or more and a synthetic fiber mechanically subjected to secondary processing by resin processing and a pre-filter made of spunbonded nonwoven fabric. It is.
【００１２】又、本発明は、合成樹脂をメルトブローし
て製造した繊維径７〜１５μｍの極細繊維からなるエレ
クトレット化されたメルトブロー不織布に、このエレク
トレット化されたメルトブロー不織布と、少なくとも繊
維径１５μｍ以上の羊毛及び合成繊維を樹脂加工して機
械的に二次加工を施した帯電加工繊維とを解繊して混合
した混合ウェッブをクロスレイヤー方式で折り畳みなが
ら積層し、且つ、スパンボンド不織布を更に積層するフ
ィルタの製造方法である。Further, the present invention relates to an electret melt-blown nonwoven fabric made of a fine resin having a fiber diameter of 7 to 15 μm produced by melt-blowing a synthetic resin, and adding the electret meltblown nonwoven fabric having a fiber diameter of at least 15 μm or more. Laminating and mixing a mixed web obtained by defibrating and mixing wool and synthetic fibers mechanically subjected to secondary processing with resin-processed wool and synthetic fibers, and further laminating spunbonded nonwoven fabric This is a method for manufacturing a filter.
【００１３】本発明によれば、繊維径が極細のメルトブ
ロー紡糸の繊維に、その繊維径より太い繊維径で、倦縮
性及び繊維長を有する羊毛繊維を混合することにより、
メルトブロー紡糸の繊維単体では困難であったウェッブ
状への加工が容易となる上、層の厚みを保持する繊維の
混合割合を調整して繊維間空隙率を変化させることによ
り、粉塵等の捕集効率が高く、フィルタ内部に粉塵等を
捕集して保持できる量が多くて、通気抵抗の上昇が緩や
かで、長時間使用することができるようになる。According to the present invention, by mixing a wool fiber having a fiber diameter larger than the fiber diameter, crunchiness and fiber length with a melt-blown fiber having an extremely small fiber diameter,
It is easy to process into a web-like shape, which was difficult with melt-blown fiber alone. In addition, by adjusting the mixing ratio of fibers that maintain the thickness of the layer and changing the inter-fiber porosity, dust is collected. Efficiency is high, the amount of dust and the like that can be collected and retained inside the filter is large, the rise in ventilation resistance is gradual, and the filter can be used for a long time.
【００１４】又、本発明によれば、羊毛と合成繊維とを
混合して機械的二次加工を施すことにより帯電加工した
不織布からマスク等を型抜きした後の原反を原料とする
こともできる上、混合ウェッブを製造するカード機は繊
維をウェッブ状に加工する一般的な機械で、エアーレイ
等の加工機械より低価格であるため、製造原価を安くす
ることができる。Further, according to the present invention, a raw material obtained by die-cutting a mask or the like from a charged nonwoven fabric by subjecting wool and synthetic fiber to mechanical secondary processing may be used as a raw material. In addition, a carding machine for producing a mixed web is a general machine for processing fibers into a web shape, and is lower in cost than a processing machine such as an air lay, so that manufacturing costs can be reduced.
【００１５】[0015]
【発明の実施の形態】図１は、本発明のフィルタの一部
を破断した部分斜視図で、このフィルタは、合成樹脂を
メルトブローして製造した繊維径７〜１５μｍの極細繊
維からなるメルトブロー不織布１と、このメルトブロー
不織布１と、裁断布等の繊維と、少なくとも繊維径１５
μｍ以上の羊毛及びポリエステル，ポリアミド，ポリプ
ロピレン等の合成繊維（以下「羊毛を基材とする繊維」
という）を樹脂加工して機械的に二次加工を施した帯電
加工繊維とを解繊して混合した上、クロスレイヤー方式
で折り畳まれた混合ウェッブ２と、スパンボンド不織布
３とを順次積層したものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partial perspective view of a filter of the present invention, in which a part of the filter is cut away. This filter is a melt-blown non-woven fabric made of synthetic resin melt-blown and having a fiber diameter of 7 to 15 .mu.m. 1, the melt-blown nonwoven fabric 1, fibers such as cutting cloth, and at least a fiber diameter 15
μm or more wool and synthetic fibers such as polyester, polyamide and polypropylene (hereinafter “fibers based on wool”)
) Is resin-processed, and the processed fibers are mechanically subjected to secondary processing, defibrated and mixed, and a mixed web 2 folded by a cross-layer method and a spun-bonded nonwoven fabric 3 are sequentially laminated. Things.
【００１６】このように、極細の合成繊維からなるメル
トブロー不織布をウェッブに多く混合した混合ウェッブ
２を使用することにより、空隙率が低下して、空気の流
れが早くても、捕集効率が高く且つ保持量が多くなると
共に、溶着し易くなって、使い捨て式マスク等にも加工
できるようなる。As described above, by using the mixed web 2 in which the melt-blown non-woven fabric made of very fine synthetic fibers is mixed in the web, the porosity is reduced and the collection efficiency is high even if the air flow is fast. In addition, as the holding amount increases, welding becomes easier, and processing into a disposable mask or the like becomes possible.
【００１７】（製造方法）次に、本発明のフィルタの原
反の製造方法について説明する。(Manufacturing Method) Next, a method of manufacturing a raw material of the filter of the present invention will be described.
【００１８】フィルタ原反（図示しない）、すなわちメ
ルトブロー紡糸繊維のエレクトレットフィルタと羊毛を
基材とする繊維からなる帯電加工樹脂のエレクトレット
フィルタとは、それぞれ、ベルトコンベア４によって矢
印Ｘ方向に搬送されて、矢印Ｙ方向に回転する解繊機５
のスパイク，ストリッパーローラ，ビータ６等によって
繊維が解かれ且つ除塵される〔以下「解繊」という（図
２参照）〕。The raw material of the filter (not shown), that is, the electret filter of meltblown spun fiber and the electret filter of electrified resin made of wool-based fiber are respectively conveyed by a belt conveyor 4 in the direction of arrow X. , Fibrillating machine 5 rotating in the direction of arrow Y
The fibers are loosened and dust-removed by the spike, stripper roller, beater 6 and the like (hereinafter referred to as "fibrillation" (see FIG. 2)).
【００１９】そして、解繊機５で解繊されたメルトブロ
ー紡糸繊維のエレクトレットフィルタの繊維は、ブロワ
ー７によってダクト８からサイクロン９に送られて、繊
維長１〜２０ｍｍの短繊維に分級された上、この繊維を
原料Ａとしてホッパ１０に送る（図２及び図３参照）。Then, the fibers of the electret filter of the melt-blow spun fibers which have been defibrated by the defibrating machine 5 are sent from the duct 8 to the cyclone 9 by the blower 7 and classified into short fibers having a fiber length of 1 to 20 mm. This fiber is sent to the hopper 10 as a raw material A (see FIGS. 2 and 3).
【００２０】又、解繊機５で解繊された帯電加工繊維の
エレクトレットフィルタの繊維は、ブロワー７によって
ダクト８からサイクロン１１に送って、繊維長１０〜５
０ｍｍの長繊維を分級し、この繊維を原料Ｂとしてホッ
パ１２に送る（図３参照）。The electret filter fibers of the charged fibers which have been defibrated by the defibrating machine 5 are sent from the duct 8 to the cyclone 11 by the blower 7 and have a fiber length of 10 to 5.
The 0 mm long fiber is classified and sent to the hopper 12 as the raw material B (see FIG. 3).
【００２１】そこで、定量の原料Ａをホッパ１０から連
続して送り出して、矢印Ｚ方向に走行するベルトコンベ
ア１３（図３参照）の上に原料Ａを層状に堆積させると
共に、定量の原料Ｂをホッパ１２から連続して送り出し
て、ベルトコンベア１３の上の層状の原料Ａの上に更に
層状に原料Ｂとの混合比率Ａ：Ｂを調整する。Therefore, the fixed amount of the raw material A is continuously sent out from the hopper 10, and the fixed amount of the raw material A is deposited on the belt conveyor 13 (see FIG. 3) running in the arrow Z direction. The mixture is sent out continuously from the hopper 12, and the mixing ratio A: B with the raw material B is further adjusted in a layered manner on the layered raw material A on the belt conveyor 13.
【００２２】即ち、エレクトレット化されたメルトブロ
ー不織布１を解繊した原料Ａと、樹脂加工及び機械加工
によって帯電処理された羊毛を基材とする原料Ｂとの混
合比率Ａ：Ｂは、ホッパ１０からの原料Ａの供給量とホ
ッパ１２からの原料Ｂの供給量とを調整することによっ
て設定できる。本発明において混合比率Ａ：Ｂは重量比
で９０：１０〜３０：７０の範囲で調整可能であるが、
７０：３０程度が最適である。That is, the mixing ratio A: B of the raw material A obtained by defibrating the electret melt-blown nonwoven fabric 1 and the raw material B made of wool that has been charged by resin processing and mechanical processing is determined by the hopper 10. By adjusting the supply amount of the raw material A and the supply amount of the raw material B from the hopper 12. In the present invention, the mixing ratio A: B can be adjusted in a range of 90:10 to 30:70 by weight,
About 70:30 is optimal.
【００２３】次に、ベルトコンベア１３の上に層状に堆
積させた２種類の原料Ａ及び原料Ｂを図３のカード機１
４に送って、原料Ａの極細のメルトブロー繊維と、原料
Ｂの繊維径が太く、倦縮性及び繊維長を有する羊毛繊維
とを混合し、且つ、原料Ａの短繊維を原料Ｂの長繊維に
機械的に絡ませると、メルトブロー不織布に比較して繊
維の充填密度の低い混合ウェッブ２が形成されると共
に、このとき原料Ａ及び原料Ｂに加わる機械的外力によ
って、混合ウェッブ２の繊維の表面に静電気を生じる。Next, the two kinds of raw materials A and B deposited in layers on the belt conveyor 13 are transferred to the card machine 1 shown in FIG.
4 and mixed with the extra-fine meltblown fiber of the raw material A and the wool fiber of the raw material B having a large fiber diameter, crunchiness and fiber length, and the short fiber of the raw material A is converted into the long fiber of the raw material B. When mechanically entangled with the nonwoven fabric, a mixed web 2 having a lower fiber filling density than that of the melt-blown nonwoven fabric is formed, and the mechanical external force applied to the raw materials A and B at this time causes the surface of the fibers of the mixed web 2 to be mixed. Generates static electricity.
【００２４】このようにして形成された混合ウェッブ２
は、クロスレイヤー積層機１５（図３及び図４参照）に
送られて、ベルトコンベア１６の上に積載されて搬送さ
れてくる通気抵抗の低いポリエステル系の繊維によって
スパンボンド方式で製造した不織布３（以下「スパンボ
ンド不織布３」という）の上に、クロスレイヤー方式で
折り畳まれながら積層される。The mixing web 2 thus formed
Is a nonwoven fabric 3 manufactured by a spunbond method using polyester fibers having low airflow resistance, which is sent to a cross-layer laminating machine 15 (see FIGS. 3 and 4), loaded on a belt conveyor 16 and conveyed. (Hereinafter referred to as “spunbonded nonwoven fabric 3”) while being folded by a cross-layer method.
【００２５】そして、スパンボンド不織布３の上にクロ
スレイヤー方式で折り畳み積層した混合ウェッブ２の上
に更にメルトブロー不織布１を積層して、繊維の密度勾
配を付けた原反１７が巻取軸１８に巻き取られていく
（図４参照）。Then, the melt-blown non-woven fabric 1 is further laminated on the mixed web 2 which is folded and laminated by the cross-layer method on the spun-bonded non-woven fabric 3. It is wound up (see FIG. 4).
【００２６】なお、メルトブロー不織布と混合ウェッブ
とに積層した状態で切断及び熱溶着できる不織布であれ
ば、スパンボンド不織布３に限定されるものではない。The spunbonded nonwoven fabric 3 is not limited to a nonwoven fabric that can be cut and thermally welded in a state where the meltblown nonwoven fabric and the mixed web are laminated.
【００２７】（性能）次に、本発明のフィルタの性能、
特に捕集効率、通気抵抗及び堆積量について説明する。(Performance) Next, the performance of the filter of the present invention,
In particular, the collection efficiency, the ventilation resistance, and the amount of deposition will be described.
【００２８】図５及び（表１）は、粒径２μm以下の石
英の粉塵が濃度３０mg／m3，線速６.７cm／secで流れる
ように通気しているときの、メルトブロー不織布１と混
合ウェッブ２とスパンボンド不織布３とを積層した本発
明の実施例のフィルタ（イ）と、メルトブロー不織布１
とスパンボンド不織布３とを積層した従来例のフィルタ
（ロ）と、混合ウェッブ２とスパンボンド不織布３とを
積層した参考例のフィルタ（ハ）とにおける粉塵の堆積
量と捕集効率或いは通気抵抗との関係を示したものであ
る。FIG. 5 and (Table 1) show that the quartz dust having a particle diameter of 2 μm or less is mixed with the melt-blown nonwoven fabric 1 when the quartz dust is aerated at a concentration of 30 mg / m 3 and a linear velocity of 6.7 cm / sec. The filter (a) of the embodiment of the present invention in which the web 2 and the spunbonded nonwoven fabric 3 are laminated, and the melt-blown nonwoven fabric 1
And the collection efficiency or air flow resistance of the conventional filter (b) in which the spunbonded nonwoven fabric 3 is laminated with the conventional filter (b) in which the mixed web 2 and the spunbonded nonwoven fabric 3 are laminated. It shows the relationship with.
【００２９】なお、捕集効率の測定は、光散乱方式によ
り、フィルタサンプルの前側と後側との粉塵等の濃度差
から求め、通気抵抗はフィルタサンプルの上流側と下流
側との圧力差から求めた。The collection efficiency is measured by the light scattering method from the concentration difference of dust and the like between the front side and the rear side of the filter sample, and the ventilation resistance is determined from the pressure difference between the upstream side and the downstream side of the filter sample. I asked.
【００３０】[0030]
【表１】 [Table 1]
【００３１】図５及び（表１）に示すように、捕集効率
は、石英の粉塵の堆積量が０mgから５０mgまで増加する
間に、本発明の実施例のフィルタ（イ）によると、初期
値の９９.９５％から最小値の９９.８８％まで０.０７
％低下するだけで、捕集効率は一様に高く且つ捕集効率
の低下もほとんど見られないのに対して、従来例のフィ
ルタ（ロ）によると、静電気の低下に伴って初期値の９
９.１６％から最小値の９９.０１％まで０.１５％も低
下し、参考例のフィルタ（ハ）によると、初期値の９
７.４１％から最小値の９２.５７％まで４.８４％も急
激に低下してしまう。As shown in FIG. 5 and (Table 1), according to the filter (a) of the embodiment of the present invention, while the amount of the deposited quartz dust increases from 0 mg to 50 mg, the trapping efficiency is improved. 0.099 from 99.95% of value to 99.88% of minimum
%, The trapping efficiency is uniformly high and the trapping efficiency is hardly decreased. On the other hand, according to the conventional filter (b), the initial value is 9% with the decrease in static electricity.
It decreased by 0.15% from 9.16% to the minimum value of 99.01%. According to the filter (c) of the reference example, the initial value was 9%.
There is a sharp drop of 4.84% from 7.41% to a minimum of 92.57%.
【００３２】又、通気抵抗は、石英の粉塵の堆積量が０
mgから５０mgまで増加する間に、本発明の実施例のフィ
ルタ（イ）によると、初期値の４.６mmH2Oから５０mg堆
積時の１２.３mmH2Oまで７.７mmH2O上昇し、参考例のフ
ィルタ（ハ）によると、初期値の１.４mmH2Oから５０mg
堆積時の７.３mmH2Oまで５.９mmH2O上昇するだけで、通
気抵抗の上昇はほとんど見られない。しかし、参考例
（ハ）は捕集効率が低くて粉塵等の透過量が多いため
に、通気抵抗の上昇が低いともいえるので、捕集用フィ
ルタとして適さない。これに対して、従来例のフィルタ
（ロ）によると、粉塵の堆積によるフィルタの目詰りに
伴って初期値の３.５mmH2Oから５０mg堆積時の２８.３m
mH2Oまで２４.８mmH2Oも急激に上昇してしまう。The airflow resistance is such that the amount of quartz dust accumulation is zero.
While increases from mg to 50mg, according to the filter (b) of Example of the present invention, 7.7mmH 2 O up from 4.6mmH 2 O in the initial value to 12.3mmH 2 O at 50mg deposition, reference According to the example filter (c), 50 mg from the initial value of 1.4 mmH 2 O
Only 5.9mmH 2 O rises to 7.3mmH 2 O during deposition, increase the ventilation resistance is hardly observed. However, the reference example (c) is not suitable as a trapping filter because the trapping efficiency is low and the amount of permeation of dust and the like is large, so that the rise in ventilation resistance can be said to be low. On the other hand, according to the conventional filter (b), the filter was clogged due to the accumulation of dust, and the initial value was 3.5 mmH 2 O.
24.8 mmH 2 O also rises rapidly to mH 2 O.
【００３３】この結果、本発明の実施例のフィルタ
（イ）によれば、粉塵の捕集効率の向上と、フィルタ内
部に粉塵等を捕集して保持できる量の増加とが容易に図
れると共に、長時間の使用も可能になる。As a result, according to the filter (a) of the embodiment of the present invention, the efficiency of collecting dust and the amount of dust that can be collected and held inside the filter can be easily increased. , It can be used for a long time.
【００３４】図６及び表１は、粒径２μm以下の石英の
粉塵が濃度３０mg／m3，線速６.７cm／secで流れるよう
に通気しているときの、メルトブロー不織布１と混合ウ
ェッブ２とスパンボンド不織布３とを積層した本発明の
実施例のフィルタ（イ）と、１枚のメルトブロー不織布
１とスパンボンド不織布３とを積層した従来例のフィル
タ（ロ）と、２枚重ねのメルトブロー不織布１とスパン
ボンド不織布３とを積層した参考例のフィルタ（ニ）と
における粉塵の堆積量と捕集効率或いは通気抵抗との関
係をそれぞれ示したものである。FIG. 6 and Table 1 show that the melt-blown nonwoven fabric 1 and the mixed web 2 when the quartz dust having a particle size of 2 μm or less was ventilated to flow at a concentration of 30 mg / m 3 and a linear velocity of 6.7 cm / sec. (B) of the embodiment of the present invention in which a nonwoven fabric 3 and a spunbonded nonwoven fabric 3 are laminated, a filter (b) of a conventional example in which one sheet of the meltblown nonwoven fabric 1 and the spunbonded nonwoven fabric 3 are laminated, and two layers of meltblown 9 shows the relationship between the amount of accumulated dust and the collection efficiency or ventilation resistance of the filter (d) of the reference example in which the nonwoven fabric 1 and the spunbonded nonwoven fabric 3 are laminated.
【００３５】図６及び（表１）に示すように、捕集効率
は、石英の粉塵の堆積量が０mgから５０mgまで増加する
間に、本発明の実施例のフィルタ（イ）によると、初期
値の９９.９５％から最小値の９９.８８％まで０.０７
％低下し、参考例のフィルタ（ニ）によると、初期値の
９９.８９％から最小値の９９.８７％まで０.０２％低
下するだけで、本発明の実施例のフィルタ（イ）と参考
例のフィルタ（ニ）とは共に捕集効率が一様に高く且つ
捕集効率の低下もほとんど見られないのに対して、従来
例のフィルタ（ロ）によると、初期値の９９.１６％か
ら最小値の９９.０１％まで０.１５％も低下してしま
う。As shown in FIG. 6 and (Table 1), according to the filter (a) of the embodiment of the present invention, the trapping efficiency was increased while the amount of the deposited quartz dust increased from 0 mg to 50 mg. 0.099 from 99.95% of value to 99.88% of minimum
%, And according to the filter (d) of the reference example, only the decrease of 0.02% from the initial value of 99.89% to the minimum value of 99.87%, the filter of the embodiment of the present invention (a) Both the filter (d) of the reference example and the filter (d) of the reference example have a uniform high collection efficiency and little decrease in the collection efficiency, whereas the filter (b) of the conventional example has an initial value of 99.16. % To a minimum value of 99.01%, which is 0.15% lower.
【００３６】又、通気抵抗は、本発明の実施例のフィル
タ（イ）によると、初期値の４.６mmH2Oから５０mg堆積
時の１２.３mmH2Oまで７.７mmH2O上昇するだけで、通気
抵抗の上昇はほとんど見られないのに対して、従来例の
フィルタ（ロ）によると、粉塵の堆積によるフィルタの
目詰りに伴って初期値の３.５mmH2Oから５０mg堆積時の
２８.３mmH2Oまで２４.８mmH2Oも急激に上昇し、参考例
のフィルタ（ニ）によると、初期値の５.２mmH2Oから５
０mg堆積時の２９.７mmH2Oまで２４.５mmH2Oも急激に上
昇してしまう。[0036] Further, the ventilation resistance is only according to the filter (b) of Example of the present invention is 7.7mmH 2 O increases from 4.6mmH 2 O in the initial value to 12.3mmH 2 O at 50mg deposition , whereas there is little rise of the air-flow resistance, according to the conventional example of the filter (b), at 50mg deposited from 3.5mmH 2 O initial value in accordance with the clogging of the filter due to the deposition of dust 28 .3mmH 24.8mmH 2 O also rapidly increased to 2 O, according to the filter (d) of reference example 5 to 5.2mmH 2 O initial value
24.5 mmH 2 O also rises sharply to 29.7 mmH 2 O when 0 mg is deposited.
【００３７】この結果、本発明の実施例のフィルタ
（イ）によれば、粉塵の捕集効率の向上とフィルタ内部
に粉塵等を捕集して保持できる量の増加とが容易に図れ
ると共に、長時間の使用も可能になる。As a result, according to the filter (a) of the embodiment of the present invention, the efficiency of collecting dust and the amount of dust that can be collected and retained inside the filter can be easily increased. Long-term use is also possible.
【００３８】図７及び表２は、粒径２μm以下の石英の
粉塵が濃度３０mg／m3，線速６.７cm／secで流れるよう
に通気しているときの、メルトブロー不織布の解繊体が
７０％、羊毛を基材とした不織布の解繊体が３０％から
なる原料をウェッブ状にした本発明の実施例の混合ウェ
ッブ（ホ）と、羊毛を基材として帯電加工した不織布の
解繊体が１００％の原料をウェッブ状にした上、ニード
ルパンチング加工によってフェルト状に加工した参考例
のウェッブ（ヘ）とにおける粉塵の堆積量と捕集効率或
いは通気抵抗との関係をそれぞれ示したものである。FIG. 7 and Table 2 show that the defibrated body of the melt-blown nonwoven fabric when the quartz dust having a particle diameter of 2 μm or less is ventilated to flow at a concentration of 30 mg / m 3 and a linear velocity of 6.7 cm / sec. A mixed web (e) of an embodiment of the present invention in which a raw material composed of 70%, 30% of a non-woven defibrated body made of wool as a base material, and a defibrated non-woven fabric charged with wool as a base material The relationship between the amount of accumulated dust and the collection efficiency or air flow resistance with the web (f) of the reference example in which a 100% raw material was formed into a web shape and processed into a felt shape by needle punching, respectively. It is.
【００３９】[0039]
【表２】 [Table 2]
【００４０】図７及び（表２）に示すように、捕集効率
において、本発明の実施例の混合ウェッブ（ホ）の初期
値が９７.８１％であるのに対して、参考例のウェッブ
（ヘ）の初期値が９９.５２％で、参考例のウェッブ
（ヘ）の初期値の方が高いのは、参考例のウェッブ
（へ）が樹脂加工されたときの帯電作用（特公平３−３
１４８３号公報及び特公平３−６３４０６号公報参照）
によるものであり、又、本発明の実施例の混合ウェッブ
（ホ）の最小値が９４.１７％であるのに対して、参考
例のウェッブ（へ）の最小値が９１.８７％で、本発明
の実施例の混合ウェッブ（ホ）の最小値の方が高いの
は、本発明の実施例の混合ウェッブ（ホ）の空隙率が小
さくて、濾過作用が強いためである。As shown in FIG. 7 and (Table 2), in the collection efficiency, the initial value of the mixed web (e) of the embodiment of the present invention is 97.81%, whereas the web of the reference example is 97.81%. The initial value of (f) is 99.52%, and the initial value of web (f) of the reference example is higher because the charging action when the web (f) of the reference example is processed with resin (Japanese Patent Publication No. -3
No. 1483 and Japanese Patent Publication No. 3-63406)
In addition, the minimum value of the mixed web (e) of the example of the present invention is 94.17%, while the minimum value of the web (f) of the reference example is 91.87%, The reason why the minimum value of the mixed web (e) of the embodiment of the present invention is higher is that the porosity of the mixed web (e) of the embodiment of the present invention is small and the filtering action is strong.
【００４１】なお、本発明の実施例の混合ウェッブ
（ホ）及び参考例のウェッブ（ヘ）の通気抵抗は一様に
低く且つ通気抵抗の上昇も緩やかである。The airflow resistance of the mixed web (e) of the embodiment of the present invention and the airflow resistance of the web (f) of the reference example are uniformly low, and the airflow resistance increases slowly.
【００４２】この特性は、空気の流れが早い空気調整機
用のフィルタや、空気の流量を多くして防塵マスクのフ
ィルタを試験する外国の規格等と比較するときに、有効
である。This characteristic is effective when compared with a filter for an air conditioner in which the flow of air is fast or a foreign standard for testing a filter for a dust mask by increasing the flow rate of air.
【００４３】（使用例）図８は、本発明のフィルタを使
い捨ての防塵マスクに使用した例を示すもので、スパン
ボンド不織布３，混合ウェッブ２及びメルトブロー不織
布１を積層した原反１７に、更に、フィルタを所定の形
状、例えば半球状に保型する通気性の保型材１９を積層
したものを型抜きした上、型抜きした接顔クッション２
０との間に紐通し２１を挟みこんだ状態で加熱成形する
ことにより、図８に示すような略半球状のマスクを製造
する。なお、紐通し２１には、マスクを口の周囲に固定
するために頭に掛ける紐２２がその長さが調整できるよ
うにして取り付けられている。(Usage Example) FIG. 8 shows an example in which the filter of the present invention is used for a disposable dustproof mask. The raw material 17 in which the spunbonded nonwoven fabric 3, the mixed web 2 and the meltblown nonwoven fabric 1 are laminated, is further provided. After the filter has a predetermined shape, for example, a hemispherical shape, laminated breathable shape-retaining material 19 is die-cut, and then the die-cut face cushion 2 is die-cut.
By performing heat molding in a state where the string thread 21 is sandwiched between the mask and the mask, a substantially hemispherical mask as shown in FIG. 8 is manufactured. In addition, a string 22 to be hung on the head for fixing the mask around the mouth is attached to the string pass 21 so that the length thereof can be adjusted.
【００４４】図９は、図８に示した本発明のフィルタ、
すなわちスパンボンド不織布３，混合ウェッブ２，メル
トブロー不織布１，保型材１９を積層して型抜きした
上、型抜きした接顔クッション２０との間に紐通し２１
を挟みこんで加熱成形したマスクの特性（ト）と、従来
のメルトブロー不織布からなるフィルタ、すなわちスパ
ンボンド不織布，メルトブロー不織布，保型材を積層し
て型抜きした上、型抜きした接顔クッションとの間に紐
通しを挟みこんで加熱成形したマスクの特性（チ）とを
示す図で、マスクの形状は同一である。FIG. 9 shows the filter of the present invention shown in FIG.
That is, the spunbonded nonwoven fabric 3, the mixed web 2, the melt-blown nonwoven fabric 1, and the shape-retaining material 19 are laminated and die-cut, and the stringing 21 is passed between the spun-bonded nonwoven fabric 3, the die-cut face cushion 20 and the die.
The characteristics (g) of the heat-molded mask sandwiched between it and the filter made of a conventional melt-blown non-woven fabric, that is, a spun-bonded non-woven fabric, a melt-blown non-woven fabric, and a die-holding material are laminated and die-cut, and then the die-cut face cushion is removed. FIG. 9 is a diagram showing characteristics (h) of a mask formed by heating with a string passing between the masks, and the shape of the mask is the same.
【００４５】なお、粒径２μm以下の石英の粉塵が濃度
５mg／m3，流量４０l／minで流れるように通気したとき
の捕集率及び通気抵抗で示したもので、一般に、通気抵
抗が１０mmH2Oを超えると、呼吸が苦しくなると言われ
ている。The trapping rate and the ventilation resistance when the quartz dust having a particle diameter of 2 μm or less was passed so as to flow at a concentration of 5 mg / m 3 and a flow rate of 40 l / min are shown. In general, the ventilation resistance is 10 mmH. Above 2 O, breathing is said to be difficult.
【００４６】そこで、５mg／m3の粉塵環境下で、通気抵
抗が１０mmH2Oに達するまでの時間を比較すると、従来
のメルトブロー不織布からなるフィルタを使用したマス
クは約８時間であるのに対して、本発明のフィルタを使
用したマスクは約１４時間となり、従来のものより長時
間使用できる。When comparing the time required for the airflow resistance to reach 10 mmH 2 O under a dust environment of 5 mg / m 3 , the mask using the filter made of the conventional melt-blown nonwoven fabric is about 8 hours. Thus, the mask using the filter of the present invention is about 14 hours, and can be used for a longer time than the conventional one.
【００４７】なお、本発明のフィルタの使用例として使
い捨ての防塵マスクで説明したが、これ以外のマスクの
フィルタとしても使用できる上、空気調整機等のフィル
タとしても使用できる。Although the disposable dust mask has been described as an example of use of the filter of the present invention, it can be used as a filter for other masks and also as a filter for an air conditioner.
【００４８】[0048]
【発明の効果】以上説明したように、本発明によれば、
粉塵等の捕集効率が高いメルトブロー不織布と、羊毛を
基材とする繊維とを混合して機械的二次加工を施すこと
により帯電加工した繊維を原料として使用した、通気抵
抗が低く、フィルタの内部に粉塵等を捕集して保持でき
る量が多い混合ウェッブとを積層することにより、粉塵
等の捕集効率が高く、通気抵抗の低減が緩やかで、フィ
ルタの内部に粉塵等を捕集して保持できる量が多くて、
長時間使用できるフィルタを提供できるという効果があ
る。As described above, according to the present invention,
Using a melt-blown non-woven fabric with high collection efficiency of dust etc. and a fiber based on wool as a raw material by mixing and wool-based fiber and subjecting it to mechanical secondary processing. By laminating a mixed web with a large amount of dust that can collect and hold dust inside, the dust collection efficiency is high, the ventilation resistance is reduced slowly, and the dust is collected inside the filter. The amount that can be held
There is an effect that a filter that can be used for a long time can be provided.
【００４９】又、混合ウェッブは、羊毛と合成繊維とを
混合して機械的二次加工を施すことにより帯電加工した
不織布からマスク等を型抜きした後の原反を原料とする
ことができる上、混合ウェッブを製造するカード機は繊
維をウェッブ状に加工する一般的な機械で、エアーレイ
等の加工機械より低価格であるため、製造原価を安くで
きるという効果がある。The mixed web can be obtained by mixing a wool and a synthetic fiber and subjecting it to mechanical secondary processing, so that a raw material obtained by punching a mask or the like from a non-woven fabric subjected to charging processing can be used as a raw material. A card machine for producing a mixed web is a general machine for processing fibers into a web, and is lower in cost than a processing machine such as an air lay. Therefore, there is an effect that manufacturing costs can be reduced.
【図１】本発明のフィルタの一部を破断した部分斜視図FIG. 1 is a partial perspective view in which a part of a filter of the present invention is broken.
【図２】本発明のフィルタを製造するために使用する解
繊機の模式断面図FIG. 2 is a schematic cross-sectional view of a defibrator used to manufacture the filter of the present invention.
【図３】本発明のフィルタに使用する混合ウェッブの製
造ラインの模式図FIG. 3 is a schematic diagram of a production line for a mixed web used in the filter of the present invention.
【図４】本発明のフィルタに使用する混合ウェッブの製
造ラインにおけるクロスレイヤー積層機の模式図FIG. 4 is a schematic view of a cross-layer laminating machine in a production line of a mixed web used for the filter of the present invention.
【図５】本発明の実施例のフィルタと従来のフィルタと
参考例のフィルタとにおける粉塵の堆積量と捕集効率或
いは通気抵抗との関係を示す特性図FIG. 5 is a characteristic diagram showing the relationship between the amount of accumulated dust and the collection efficiency or ventilation resistance of the filter of the embodiment of the present invention, the conventional filter, and the filter of the reference example.
【図６】本発明の実施例のフィルタと従来のフィルタと
参考例のフィルタとにおける粉塵の堆積量と捕集効率或
いは通気抵抗との関係を示す特性図FIG. 6 is a characteristic diagram showing the relationship between the amount of accumulated dust and the collection efficiency or ventilation resistance of the filter of the embodiment of the present invention, the conventional filter, and the filter of the reference example.
【図７】本発明の実施例の混合ウェッブと参考例のウェ
ッブとにおける粉塵の堆積量と捕集効率或いは通気抵抗
との関係を示す特性図FIG. 7 is a characteristic diagram showing a relationship between a dust accumulation amount and a collection efficiency or a ventilation resistance between the mixed web of the embodiment of the present invention and the web of the reference example.
【図８】本発明のフィルタを使用したマスクの一部を破
断した斜視図FIG. 8 is a partially cutaway perspective view of a mask using the filter of the present invention.
【図９】従来のフィルタを使用したマスクと本発明のフ
ィルタを使用したマスクとの使用時間に対する捕集効率
及び通気抵抗との関係を示す特性図FIG. 9 is a characteristic diagram showing a relationship between a collection efficiency and a ventilation resistance with respect to a use time of a mask using a conventional filter and a mask using a filter of the present invention.
１ メルトブロー不織布 ２ 混合ウェッブ ３ スパンボンド不織布 ５ 解繊機 ７ ブロワー ８ ダクト ９，１１ サイクロン １０，１２ ホッパ １４ カード機 １５ クロスレイヤー積層機 １９ 保型材 ２０ 接顔クッション ２１ 紐通し ２２ 紐 DESCRIPTION OF SYMBOLS 1 Melt blown nonwoven fabric 2 Mixed web 3 Spunbonded nonwoven fabric 5 Fibrillator 7 Blower 8 Duct 9,11 Cyclone 10,12 Hopper 14 Card machine 15 Cross layer laminating machine 19 Mold retention material 20 Face cushion 21 String passing 22 String
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｄ０４Ｈ 3/16 Ｄ０４Ｈ 3/16 5/06 5/06 5/08 5/08 Ｚ (72)発明者 古市 良平 東京都千代田区四番町７番地 興研株式会 社内 Ｆターム(参考） 4D019 AA01 BA12 BA13 BB03 BB13 BB18 BC01 CB06 DA03 4L047 AA09 AA14 AA21 AA23 AA28 AB04 AB07 AB08 BA01 BA08 CA02 CA05 CB01 CB08 CC12 EA01 EA05 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) D04H 3/16 D04H 3/16 5/06 5/06 5/08 5/08 Z (72) Inventor Furuichi Ryohei 7th Yonbancho, Chiyoda-ku, Tokyo KOKEN Stock Company In-house F-term (reference) 4D019 AA01 BA12 BA13 BB03 BB13 BB18 BC01 CB06 DA03 4L047 AA09 AA14 AA21 AA23 AA28 AB04 AB07 AB08 BA01 BA08 CA02 CA05 CB01 EA05
Claims (4)
維径７〜１５μｍの極細繊維からなるエレクトレット化
されたメルトブロー不織布と、該エレクトレット化され
たメルトブロー不織布と、少なくとも繊維径１５μｍ以
上の羊毛を基材とする繊維とを解繊して混合してなり、
クロスレイヤー方式で折り畳まれた混合ウェッブとを順
次積層してなることを特徴とするフィルタ。1. An electret melt-blown non-woven fabric made of ultrafine fibers having a fiber diameter of 7 to 15 μm produced by melt-blowing a synthetic resin, an electret melt-blown non-woven fabric, and a wool having a fiber diameter of at least 15 μm or more. And defibrated and mixed,
A filter characterized by sequentially laminating mixed webs folded by a cross-layer method.
維径７〜１５μｍの極細繊維からなるエレクトレット化
されたメルトブロー不織布と、該エレクトレット化され
たメルトブロー不織布と、少なくとも繊維径１５μｍ以
上の羊毛を基材とする繊維とを解繊して混合してなり、
クロスレイヤー方式で折り畳まれた混合ウェッブと、ス
パンボンド不織布を順次積層してなることを特徴とする
フィルタ。2. An electret melt-blown nonwoven fabric made of ultrafine fibers having a fiber diameter of 7 to 15 μm produced by melt-blowing a synthetic resin, an electret meltblown nonwoven fabric, and wool having a fiber diameter of at least 15 μm or more. And defibrated and mixed,
A filter characterized by sequentially laminating a mixed web folded by a cross-layer method and a spunbonded nonwoven fabric.
維径７〜１５μｍの極細繊維からなるエレクトレット化
されたメルトブロー不織布に、該エレクトレット化され
たメルトブロー不織布と、少なくとも繊維径１５μｍ以
上の羊毛を基材とする繊維とを解繊して混合した混合ウ
ェッブをクロスレイヤー方式で折り畳みながら積層する
ことを特徴とするフィルタの製造方法。3. An electret melt-blown non-woven fabric made of a synthetic resin produced by melt-blowing and having a fiber diameter of 7 to 15 μm, and the electret melt-blown non-woven fabric and a wool having a fiber diameter of at least 15 μm or more. A method for producing a filter, comprising: laminating and mixing a mixed web obtained by defibrating and mixing fibers to be formed by a cross-layer method.
維径７〜１５μｍの極細繊維からなるエレクトレット化
されたメルトブロー不織布に、該エレクトレット化され
たメルトブロー不織布と、少なくとも繊維径１５μｍ以
上の羊毛を基材とする繊維とを解繊して混合した混合ウ
ェッブをクロスレイヤー方式で折り畳みながら積層した
上、更にスパンボンド不織布又は前記エレクトレット化
されたメルトブロー不織布及び前記混合ウェッブに積層
した状態で切断及び熱溶着可能な不織布を更に積層する
ことを特徴とするフィルタの製造方法。4. An electret melt-blown nonwoven fabric made of synthetic resin, which is produced by melt-blowing and having a fiber diameter of 7 to 15 μm, and an electret meltblown nonwoven fabric and a wool having a fiber diameter of at least 15 μm or more. The mixed web obtained by disintegrating and mixing the fibers to be mixed is folded and laminated by a cross layer method, and further cut and heat welded in a state where the mixed web is further laminated with the spun bond nonwoven fabric or the electret melt blown nonwoven fabric and the mixed web. A method for producing a filter, further comprising laminating a nonwoven fabric.
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|---|---|---|---|
| JP2000165630A JP4126679B2 (en) | 2000-06-02 | 2000-06-02 | Filter and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000165630A JP4126679B2 (en) | 2000-06-02 | 2000-06-02 | Filter and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001340716A true JP2001340716A (en) | 2001-12-11 |
| JP4126679B2 JP4126679B2 (en) | 2008-07-30 |
Family
ID=18669075
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000165630A Expired - Fee Related JP4126679B2 (en) | 2000-06-02 | 2000-06-02 | Filter and manufacturing method thereof |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013208327A (en) * | 2012-03-30 | 2013-10-10 | Japan Vilene Co Ltd | Mask |
| CN108221184A (en) * | 2018-04-03 | 2018-06-29 | 江苏盛纺纳米材料科技股份有限公司 | Nano-spun melts composite nonwoven material and its preparation method and application |
| CN106390595B (en) * | 2016-11-21 | 2018-11-20 | 天津工业大学 | A kind of high-temp. resistant air filtering material production line |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109091965A (en) * | 2018-08-31 | 2018-12-28 | 佛山市滤净洁净材料科技有限公司 | A kind of smoke filtration material and preparation method thereof |
-
2000
- 2000-06-02 JP JP2000165630A patent/JP4126679B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013208327A (en) * | 2012-03-30 | 2013-10-10 | Japan Vilene Co Ltd | Mask |
| CN106390595B (en) * | 2016-11-21 | 2018-11-20 | 天津工业大学 | A kind of high-temp. resistant air filtering material production line |
| CN108221184A (en) * | 2018-04-03 | 2018-06-29 | 江苏盛纺纳米材料科技股份有限公司 | Nano-spun melts composite nonwoven material and its preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4126679B2 (en) | 2008-07-30 |
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