JP2010284649A - ナノ繊維濾材 - Google Patents
ナノ繊維濾材 Download PDFInfo
- Publication number
- JP2010284649A JP2010284649A JP2010161336A JP2010161336A JP2010284649A JP 2010284649 A JP2010284649 A JP 2010284649A JP 2010161336 A JP2010161336 A JP 2010161336A JP 2010161336 A JP2010161336 A JP 2010161336A JP 2010284649 A JP2010284649 A JP 2010284649A
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- JP
- Japan
- Prior art keywords
- filter medium
- millimeters
- nanofibers
- filter media
- fibrillated
- 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
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/0005—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts
- A61L2/0011—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts using physical methods
- A61L2/0017—Filtration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/0005—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts
- A61L2/0082—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor for pharmaceuticals, biologicals or living parts using chemical substances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/022—Filtration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
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Abstract
【解決手段】ナノ繊維を含み、約0.25ミリメートル未満の厚さ、約0.075より大きい性能指数を有し、さらに約32リットル/分の流量で100cm2の大きさの試料を通過させて捕捉した場合、約0.18ミクロンのサイズのエアロゾル粒子を捕捉した場合の濾過効率が約99.9%より大きく、かつ約40ミリメートル未満の水柱の圧力降下の濾材であるエアフィルター。ナノ繊維を被覆して既存濾材のFOMを増加させることにより既存濾材の性能を向上させることもできる。好ましくは、ナノ繊維はフィブリル化される。
【選択図】図1
Description
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超える濾材をもたらしうる前記濾材に関する。
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超える濾材をもたらしうる前記濾材に関する。
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超える濾材をもたらしうる前記濾材に関する。
の濾過効率が約99.9%に等しいかそれより大きく、かつ約32リットル/分の流量で100cm2の大きさの試料に通過させたとき約40ミリメートルより少ない水柱の圧力降下を有するという性能基準を有するものとし、
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超える濾材をもたらすように約0.25ミリメートル未満の厚さを有するフィブリル化繊維の層を形成する工程を含むエアフィルターの製造法に関する。
定義
「結合剤」は主に他の物質を互いに結合させるために使用される物質を意味する。
れるパルプのフリーネスまたは濾水度の値を意味する。この方法は製紙分野の当業者によく知られている。
例えば、遊離した繊維を紙に変換することである。
本発明の高性能微粒子空気(HEPA)濾材は多数のナノ繊維および結合剤を含み、約0.25ミリメートル未満の厚さを有し、空気を約20℃および大気圧において約32リットル/分の流量で直径100cm2の円板型濾材を通過させた場合の直径約0.18ミクロンのエアロゾル粒子に対する濾過効率が約99.9%より大きい層に形成され、および約45ミリメートル未満の水柱の圧力降下であることを含む。本発明の濾材は薄く、プリーツを付けることができるために最終フィルター設計に組み込まれる濾材の量を増加することができ、それによりフィルターの性能を向上させる。各層が0.38〜0.457ミリメートルの厚さを有する従来のHEPA材料より非常に薄いため、実質的により多くの本発明の濾材を使用して既存の濾過システムを適度な圧力降下で同様の、または改善されたエアロゾル遮断をもたらすように改良することができる。
殺生物性を付与することができる。
本発明の濾材は限定されないがポリマー、工業樹脂、セラミックス、セルロース、レーヨン、ガラス、金属、活性アルミナ、カーボンまたは活性炭、シリカ、ゼオライト、またはこれらの組合せを含む有機または無機材料であるナノ繊維からなる。有機および無機繊維および/またはホイスカーの組合せが本発明の範囲内で考えられ、例えばガラス、セラミックまたは金属繊維およびポリマー繊維を一緒に使用することができる。
濾材の機械的強度は濾材を通過する気流を有意に妨げない支持層上に濾材を形成することにより向上させることができる。支持層は支持層の細孔径がそんなに大きくないためナノ繊維が減圧下で空気透過性支持体を通して引っ張られるような空気透過性支持体である。支持層は織布、不織布、スパンボンド、メルトブローン、セルロースおよび他の繊維性材料から製造することができる。このような支持体の例はテネシー州オールドヒッコリーのBBAノンウーブンスリーメイ社から入手できるREEMAY(登録商標)2004またはREEMAY(登録商標)2275のようなスパンボンドポリエステルである。また、支持層は金型、かび、真菌または細菌に耐性がある物質で処理または製造することもできる。
粒子、繊維、ホイスカーまたは粉末形態の1種以上の添加剤をナノ繊維と混合して他の汚染物の遮断を手助けし、あるいは水分および/または臭気を除去することもできる。有用な添加剤には金属粒子、活性アルミナ、活性炭、シリカ、ポリマー粉末および繊維、ガラスビーズまたは繊維、セルロース繊維、イオン交換樹脂、工業用樹脂、セラミックス、ゼオライト、珪藻土、活性ボーキサイト、フラー土、硫酸カルシウム、超吸着性ポリマー(SAP)、またはこれらの組合せがあるが、これらに限定されない。添加剤はまた、特定の用途に応じて微生物学的耐性または生物致死性を付与するために化学的に処理することができる。このような添加剤は好ましくは使用時に得られる濾材の気流が実質的に阻害されないように十分な量で存在する。添加剤の量は濾過システムの特定の機能に依存する。
本発明のHEPA濾材は当業者に知られている方法に従って製造することができる。乾式法にはスパンボンド法、エレクトロスピニング法、アイランズ・イン・シー(islands-in-sea)法、フィブリル化フィルム法、メルトブロー法、および当業者に知られている他の乾式法がある。典型的な乾式法はカーディングして単繊維にすることにより分離することができる短繊維で開始し、次に空気力学的方法により所望の厚さに置いて非結合繊維シートを形成する。次に、非結合繊維を水力ジェットに付して繊維をフィブリル化し、水中で絡み合わせることができる。高圧ジェット水にさらされるとフィブリル化繊維のウェブに変換される特定のプラスチックフィルムにおいて同様の方法を行なうことができる。
するのに適した組成物を生成することができる。濾材の最終重量は好ましくは濾材の全重量に基づいて約21〜約65g/m2、より好ましくは約32〜約48g/m2である。このようにフィブリル化する繊維にはリヨセルがあり、アクリル、ナイロンまたは結晶化が不完全な他
の合成繊維のグレードを選択する。
本発明の他の態様において、既存濾材のような支持体上へのナノ繊維の部分被覆は既存濾材のFOMを少なくとも約100%向上させることがわかった。ナノ繊維は湿式法を使用して既存濾材上に約0.5g/m2〜約11.0g/m2、好ましくは約1.08g/m2の割合で負荷される。ナノ繊維は支持体に強く付着し、さらに一次結合剤として作用することにより同様に他の繊維または成分を支持体上に付着させるために使用することができる。固体形態の従来の結合剤物質はすべての用途で必ずしも必要とは限らないが支持体への付着を高めるために使用することができる。
次の実施例により本発明を詳しく説明するが、これらは本発明の範囲を制限するものではない。
大部分の水を除去してから、さらに真空ポンプで脱水して過剰の水分を除去して比較的滑らかでフラットな極めて薄い紙様シートを形成した。得られたシートをスクリーンから分離し、ブロッターシートと上部および下部を合せて一体化した。そのシートを2.27kgの大理石ローリングピンでそっと巻き取って過剰の水を除去し、シートの上面を伸ばした。次に、シートを2つの新しい乾燥ブロッターシートの間に置き、約120℃のFORMAX(登録商標)シート乾燥器に約10〜約15分間入れた。乾燥した濾材をブロッターシートから分離し、すぐにその両側をFORMAX(登録商標)シート乾燥器で約5分間加熱して存在する結合剤を活性化した。
フィブリル化リヨセルおよびミクロガラスナノ繊維を有するHEPA濾材
これらの実施例はコロラド州デンバーのジョンズマンビル社から商品名FIBREGLASS(登録商標)#106で入手できる繊維径0.65ミクロンのミクロガラス繊維と混合された水性分散液中におけるカナダ標準フリーネス約8のフィブリル化リヨセルナノ繊維で製造されたHEPA濾材の性能を明らかにした。
フィブリル化リヨセルおよびミクロガラスナノ繊維を有するHEPA濾材
実施例3〜7の濾材はFIBREGLASS(登録商標)#106ミクロガラス繊維と混合された水性分散液中におけるカナダ標準フリーネス約2のフィブリル化リヨセルナノ繊維で製造した。
日本の大阪にあるクラレ社から商業的に入手できるKURALON(登録商標)ポリ酢酸ビニル(PVA)をこれらの実施例および下記の実施例で結合剤として使用した。実施例3の濾材はさらにMICROTHENE(登録商標)グレードFN510を結合剤として含有した。MICROTHENE(登録商標
)は0.5重量%の非晶質沈降シリカを含有する。組成を表IIに示す。濾材の特性を表IIIに示す。
CSF2フィブリル化リヨセルおよびミクロガラスナノ繊維を有するHEPA濾材
これらの実施例は結合剤を含まず、下記に示されるような様々な量の異なる結合剤を使用してフィブリル化リヨセルナノ繊維およびFIBREGLASS#106ミクロガラス繊維で製造された本発明のHEPA濾材の性能を明らかにした。使用した結合剤はPVAと MICROTHENE(登録商標)およびシリカの全重量に基づいて0.5重量%の非晶質沈降シリカを有するMICROTHENE(登録商標)グレードFN−510である。
様々な量のPVA結合剤を使用するCSF2フィブリル化リヨセルおよびミクロガラスナノ繊維を有するHEPA濾材
これらの実施例は様々な量のPVA結合剤を使用して製造したHEPA濾材の異なる性能を明らかにした。濾材の組成を表VIに示し、性能試験の結果を表VIIに示す。
様々な量のPVA結合剤を使用するCSF2フィブリル化リヨセルおよびミクロガラスナノ繊維を有するプリーツおよび非プリーツHEPA濾材の比較
これらの実施例はプリーツを付けた本発明のHEPA濾材(表IXでPの文字で示される)が元の非プリーツ形態の性能を維持することを明らかにした。2のカナダ標準フリーネスを有するリヨセルナノ繊維を濾材の製造に使用した。使用した結合剤はPVAである。
様々な量のEST−8結合剤を使用するCSF2フィブリル化リヨセルおよびミクロガラスナノ繊維を有するHEPA濾材
これらの実施例は様々な量のEST−8ポリエチレン繊維を結合剤として使用したHEPA濾材の異なる性能を明らかにした。
様々な量のEST−8結合剤を使用するCSF2フィブリル化リヨセルおよびミクロガラスナノ繊維を有するプリーツおよび非プリーツHEPA濾材の比較
次の実施例は30重量%のリヨセルナノ繊維、60重量%のガラスミクロ繊維(FIBREGLASS#106)および10重量%のEST−8結合剤で製造されたプリーツおよび非プリーツHEPA濾材の性能を比較した。
ナノ繊維被覆を有する既存濾材のFOMの改善
次の実施例は0.15g/フィート2(乾燥重量)のナノ繊維を負荷した既存濾材についてFOMの増加、それによりフィルターの性能を明らかにした。すべての測定は100cm2のジグにおいて32slpmの流量で0.18ミクロンのエアロゾル粒子を使用して行なった。元の濾材はFMで示され、その部分的なエアロゾル通過、気流抵抗性およびFOMにより定義される。FM1およびFM2は不織布である。実施例72において、上記のような湿式法を使用して元の濾材FM1を約2のカナダ標準フリーネスを有する25%アクリルナノ繊維および75%FIBRE GLASS#106ミクロガラス繊維で被覆した。実施例72のアクリル繊維は米国三菱レーヨン社から入手した。実施例73において、元の濾材を約2のカナダ標準フリーネスを有する25%リヨセル繊維および75%FIBREGLASS#106で被覆した。実施例74において、元の濾材FM1を約2のカナダ標準フリーネスを有する25%フィブリル化リヨセルナノ繊維で被覆した。実施例75において、元の濾材FM2を米国三菱レーヨン社から入手できる100%アクリルナノ繊維で被覆した。表VIIIを見てわかるように、少量のナノ繊維を既存濾材に加えるとFOMを有意に増加し、それにより濾材の性能を高める。
ナノ繊維被覆を有するエンジン濾紙のFOMの改善
次の実施例は1.6g/m2(乾燥重量)のナノ繊維を負荷した既存濾材についてFOMの増加、それによりフィルターの性能を明らかにした。FM3で示された元の濾材は標準的な自動車エンジン吸気フィルターで使用される標準的な樹脂結合セルロース濾材である。通過は100cm2のジグにおいて32slpmの流量で0.18ミクロンのエアロゾル粒子を使用して試験した。実施例76の濾材を約2のカナダ標準フリーネスを有するフィブリル化リヨセルナノ繊維で被覆した。実施例77および78の濾材を約25%フィブリル化リヨセルナノ繊維および約75%FIBREGLASS#106ミクロガラス繊維で被覆した。実施例79の濾材を約2のカナダ標準フリーネスを有する約25%アクリルナノ繊維および約75%FIBREGLASS#106ミクロガラス繊維で被覆した。実施例79で使用したアクリルナノ繊維は米国三菱レーヨン社から入手したもので3ミリメートルの長さにフィブリル化した。表IXを見てわかるように、少量のナノ繊維を加えて被覆することによりFOMの有意な改善が達成された。このような少量のナノ繊維は低コストのフィルターについてフィルターの性能を改善する経済的な方法である。
Claims (19)
- 約45未満のカナダ標準フリーネスを有するフィブリル化繊維を含む濾材であって、約0.25ミリメートルに等しいかそれより小さい厚さ、約0.075より大きい性能指数、さらに約32リットル/分の流量で100cm2の大きさの試料に通過させたとき約0.18ミクロンのサイズのエアロゾル粒子を捕捉した場合の濾過効率が約99.9%より大きく、かつ約40ミリメートルより少ない水柱の圧力降下の性能基準を有するものとし、
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超える濾材をもたらしうる前記濾材。 - さらにミクロガラス繊維を含有する請求項1記載の濾材。
- フィブリル化繊維は約10未満のカナダ標準フリーネスを有する請求項1記載の濾材。
- さらに織布、不織布、スパンボンド、メルトブローン、セルロースおよび他の繊維性材料からなる群より選択される材料を含む支持層を含有する請求項1記載の濾材。
- フィブリル化繊維はウエットレイ法で濾材に成形される請求項1記載の濾材。
- フィブリル化繊維は静電気的に帯電しているか、または摩擦電気の電荷をもたらす請求項1記載の濾材。
- さらに活性炭、活性アルミナ、ゼオライト、珪藻土、ケイ酸塩、アルミノケイ酸塩、チタン酸塩、骨炭、カルシウムヒドロキシアパタイト、酸化マンガン、酸化鉄、マグネシア、パーライト、タルク、ポリマー粒子、クレー、沃素化樹脂、イオン交換樹脂、セラミックスまたはこれらの組合せからなる群より選択される添加剤を含有する請求項1記載の濾材。
- 請求項1記載の濾材を含むエアフィルター。
- ミクロガラス繊維と混合されたリヨセル、アクリル、ナイロンまたはこれらの組合せであり、約45未満のカナダ標準フリーネスを有するフィブリル化繊維を含む濾材であって、約0.25ミリメートルに等しいかそれより小さい厚さ、約0.075より大きい性能指数、さらに約32リットル/分の流量で100cm2の大きさの試料に通過させたとき約0.18ミクロンのサイズのエアロゾル粒子を捕捉した場合の濾過効率が約99.9%より大きく、かつ約40ミリメートルより少ない水柱の圧力降下の性能基準を有するものとし、
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超える濾材をもたらしうる前記濾材。 - ミクロガラス繊維は約1ミクロン未満の繊維径を有する請求項9記載の濾材。
- リヨセル、アクリル、ナイロンまたはこれらの組合せを含むフィブリル化繊維は約250ナノメートルの繊維径および約1〜約8ミリメートルの細断繊維長を有する請求項9記載の濾材。
- リヨセル、アクリル、ナイロンまたはこれらの組合せを含むフィブリル化繊維は濾材の約5重量%〜約40重量%の量で存在する請求項9記載の濾材。
- 請求項9記載の濾材を含むるエアフィルター。
- 約10未満のカナダ標準フリーネスを有するフィブリル化繊維を含む濾材であって、約0.25ミリメートルに等しいかそれより小さい厚さ、約0.075より大きい性能指数、さらに約32リットル/分の流量で100cm2の大きさの試料に通過させたとき約0.18ミクロンのサイズのエアロゾル粒子を捕捉した場合の濾過効率が約99.9%より大きく、かつ約40ミリメートルより少ない水柱の圧力降下の性能基準を有するものとし、
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超えるという特徴を有する濾材をもたらしうる前記濾材。 - フィブリル化繊維はリヨセル、アクリル、ナイロンまたはこれらの組合せを含む請求項14記載の濾材。
- フィブリル化繊維を分散させ;そして
濾材が約0.075より大きい性能指数、さらに約32リットル/分の流量で100cm2の大きさの試料に通過させたとき約0.18ミクロンのサイズのエアロゾル粒子を捕捉した場合の濾過効率が約99.9%より大きく、かつ約40ミリメートルより少ない水柱の圧力降下の性能基準を有するものとし、
前記0.25ミリメートルよりも薄い濾材の濾過効率および圧力降下は、0.25ミリメートルの厚さとの違いを0.25ミリメートルに合わせて濾過効率および圧力降下を調整したときに前記性能基準を満たす、またはその性能基準を超える濾材をもたらすように約0.25ミリメートル未満の厚さを有するフィブリル化繊維の層を形成する
工程を含むエアフィルターの製造法。 - 多数のフィブリル化ナノ繊維を用意し;
フィブリル化ナノ繊維を流動懸濁液から既存濾材上にウエットレイまたは被覆し、ここでフィブリル化ナノ繊維は既存濾材上に約0.5g/m2〜約11.0g/m2の割合で負荷され;そして
既存濾材の性能指数を少なくとも約100%増加させる
工程を含む既存濾材の性能を向上させる方法。 - 多数のフィブリル化ナノ繊維を用意する工程において、ナノ繊維はリヨセルナノ繊維、アクリルナノ繊維、ナイロンナノ繊維またはこれらの組合せを含み、さらにミクロガラス繊維を含有する請求項17記載の方法。
- さらに結合剤を付与する工程を含有し、フィブリル化ナノ繊維および結合剤は流動懸濁液から既存濾材上にウエットレイまたは被覆される請求項17記載の方法。
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012223674A (ja) * | 2011-04-15 | 2012-11-15 | Shinshu Univ | フィルター及びフィルターの製造方法 |
JP2014519332A (ja) * | 2011-06-09 | 2014-08-14 | ティー.エフ.エイチ.パブリケーションズ、インコーポレーテッド | ナノ繊維を含む水槽フィルタ媒体 |
US9638625B2 (en) | 2011-10-27 | 2017-05-02 | Hewlett-Packard Development Company, L.P. | Apparatus for filtering species |
KR20150126917A (ko) * | 2013-03-09 | 2015-11-13 | 도널드선 컴파니 인코포레이티드 | 반응성 첨가제로부터 제조된 미세 섬유 |
KR102139254B1 (ko) | 2013-03-09 | 2020-07-29 | 도널드선 컴파니 인코포레이티드 | 반응성 첨가제로부터 제조된 미세 섬유 |
JP2018051470A (ja) * | 2016-09-28 | 2018-04-05 | パナソニックIpマネジメント株式会社 | 積層体 |
Also Published As
Publication number | Publication date |
---|---|
AU2003210565B2 (en) | 2008-03-13 |
CA2474854C (en) | 2010-04-27 |
DE60333550D1 (de) | 2010-09-09 |
WO2003064006A1 (en) | 2003-08-07 |
CA2474854A1 (en) | 2003-08-07 |
CN1279997C (zh) | 2006-10-18 |
JP2008229619A (ja) | 2008-10-02 |
JP5307772B2 (ja) | 2013-10-02 |
ATE475468T1 (de) | 2010-08-15 |
EP1483034A4 (en) | 2006-01-25 |
JP2005527344A (ja) | 2005-09-15 |
US6872311B2 (en) | 2005-03-29 |
HK1074018A1 (en) | 2005-10-28 |
IL163159A (en) | 2008-03-20 |
US20030177909A1 (en) | 2003-09-25 |
CN1625429A (zh) | 2005-06-08 |
EP1483034A1 (en) | 2004-12-08 |
EP1483034B1 (en) | 2010-07-28 |
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