WO1999058224A1 - Filtre a air triboelectrique - Google Patents
Filtre a air triboelectrique Download PDFInfo
- Publication number
- WO1999058224A1 WO1999058224A1 PCT/CA1998/000470 CA9800470W WO9958224A1 WO 1999058224 A1 WO1999058224 A1 WO 1999058224A1 CA 9800470 W CA9800470 W CA 9800470W WO 9958224 A1 WO9958224 A1 WO 9958224A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- fibers
- triboelectric
- air filter
- filters
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/28—Plant or installations without electricity supply, e.g. using electrets
- B03C3/30—Plant or installations without electricity supply, e.g. using electrets in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4334—Polyamides
- D04H1/4342—Aromatic polyamides
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler material
Definitions
- the present invention relates to a new triboelectric air filter.
- electrostatic filters are in fact capable of capturing a greater number of dusts than conventional filters which do not have electrical charges. This difference is explained by the fact that attractive forces are exerted between the material of the filter and the dust which, naturally, also contains electric charges.
- electrostatic filters There are currently three methods for obtaining such electrostatic filters. The first of these is to produce a permanent imbalance, at the molecular level, between the electrical charges of a given matter. The product obtained with this method is usually referred to as "electret”.
- the second method consists in implanting ions, normally by bombardment, in the material constituting the filter.
- the third method exploits the principle of triboelectricity, according to which electric charges appearing when at least two different materials are rubbed together.
- the products obtained by this third method are usually referred to as "triboelectric filters”.
- a filter should ideally have a high number of charges which produce intense electrostatic fields, for a time at least equal to the life of the filter. All these characteristics depend on the method used to produce the fillers, on the choice and proportions of the constituent materials of the filter and finally on the conditions of use of the filter. The conditions of use are, implicit in the existence of a standard method for measuring the effectiveness of filters, considered to be constant. Therefore, the distinction is essentially made at the level of the manufacturing method and the choice of the constituent materials of the filter.
- triboelectric air filters with an efficiency of between 90% and 99% can be obtained with 3 such mixtures, and this with relatively small amounts of polymetaphenylene isophthalamide fibers.
- the subject of the invention is therefore an air filter of the triboelectric type, characterized in that it essentially consists of a mixture of polypropylene fibers with polymetaphenylene isophthalamide fibers.
- the triboelectric air filter according to the invention consists of a mixture of fibers (1) of polypropylene with fibers (2) of polymetaphenylene isophthalamide.
- This mixture is preferably in the form of a nonwoven with a weight ratio of the fibers (2) to the fibers (1) of between 5:95 and 50:50 and more preferably still between 10:90 and 30: 70.
- the weight ratio of fibers (2) to fibers (1) in the filter according to the invention is much lower than those proposed in the two patents analyzed above.
- any type of fiber (1) or (2) can be used.
- the fibers (2) polymetaphenylene isophthalamide, preferably used those sold under the trademarks NOMEX ®, ® and The APY TEIJINCONEX ®.
- the mass of the filter, as well as its surface mass (in g / m 2 ), are a function of the desired physical properties, such as the pressure drop and the filtration efficiency.
- the areal mass of the filters should be between 15 and 500 g / m 2 .
- the triboelectric air filter according to the invention has a filtration efficiency of the order of 90% to 99%.
- the pressure losses are usually between 0.1 to 2 mm of water. 4
- these characteristics are stable over time.
- F1 Filter in the form of a nonwoven having a surface mass of 135 g / m 2 and a weight ratio of fibers (2) to fibers (1) equal to 10:90.
- the fibers (2) had a titer of 1.5 denier; fibers (1) had a 3 denier titer
- F2 Filter identical to F1 with, in addition, an anti-static agent to inhibit electrical charges.
- F3 Filter with a surface density equal to 135 g / m 2 , available on the market and produced by a triboelectric process as described in US Pat. No. 5,470,485.
- the quality factor is a numerical value which has been calculated with the following equation:
- the performance of the filter F1 according to the invention has shown good stability over time. This filter, kept for two years, did not show any significant difference between the initial efficiency value and the measurements made 4 months and 24 months after its manufacture.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/700,212 US6328788B1 (en) | 1998-05-13 | 1998-05-13 | Triboelectric air filter |
EP98921296A EP1085934B1 (fr) | 1998-05-13 | 1998-05-13 | Filtre a air triboelectrique |
JP2000548068A JP2002514494A (ja) | 1998-05-13 | 1998-05-13 | 摩擦電気エアフィルター |
AU74208/98A AU7420898A (en) | 1998-05-13 | 1998-05-13 | Triboelectric air filter |
PCT/CA1998/000470 WO1999058224A1 (fr) | 1998-05-13 | 1998-05-13 | Filtre a air triboelectrique |
CA002330805A CA2330805C (fr) | 1998-05-13 | 1998-05-13 | Filtre a air triboelectrique |
DE69804361T DE69804361T2 (de) | 1998-05-13 | 1998-05-13 | Reibungselektrischer luftfilter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CA1998/000470 WO1999058224A1 (fr) | 1998-05-13 | 1998-05-13 | Filtre a air triboelectrique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999058224A1 true WO1999058224A1 (fr) | 1999-11-18 |
Family
ID=4173296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA1998/000470 WO1999058224A1 (fr) | 1998-05-13 | 1998-05-13 | Filtre a air triboelectrique |
Country Status (7)
Country | Link |
---|---|
US (1) | US6328788B1 (fr) |
EP (1) | EP1085934B1 (fr) |
JP (1) | JP2002514494A (fr) |
AU (1) | AU7420898A (fr) |
CA (1) | CA2330805C (fr) |
DE (1) | DE69804361T2 (fr) |
WO (1) | WO1999058224A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002034364A1 (fr) * | 2000-10-26 | 2002-05-02 | Tesa Ag | Charge triboelectrique de tissus et de maillages |
US6419729B1 (en) | 2000-04-17 | 2002-07-16 | 3M Innovative Properties Company | Filter assemblies with adhesive attachment systems |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1590062A4 (fr) * | 2002-12-31 | 2006-02-01 | Ahlstrom Air Media Llc | Matiere de filtration a deux fibres |
US6808548B2 (en) * | 2002-12-31 | 2004-10-26 | Hollinee Glass Corporation | Three component filtration material |
US20040177758A1 (en) * | 2003-03-14 | 2004-09-16 | Tsai Peter P. | Triboelectric air filter media |
SE526593C2 (sv) * | 2003-10-21 | 2005-10-11 | Scandfilter Ab | Luftfiltreringssystem |
SG175662A1 (en) * | 2005-12-29 | 2011-11-28 | Environmental Man Confederation Inc | Improved active field polarized media air cleaner |
US8795601B2 (en) | 2005-12-29 | 2014-08-05 | Environmental Management Confederation, Inc. | Filter media for active field polarized media air cleaner |
US7708813B2 (en) * | 2005-12-29 | 2010-05-04 | Environmental Management Confederation, Inc. | Filter media for active field polarized media air cleaner |
US9789494B2 (en) | 2005-12-29 | 2017-10-17 | Environmental Management Confederation, Inc. | Active field polarized media air cleaner |
US8814994B2 (en) | 2005-12-29 | 2014-08-26 | Environmental Management Confederation, Inc. | Active field polarized media air cleaner |
US20090095160A1 (en) * | 2007-10-12 | 2009-04-16 | Ronald Troxell | Electrostatically charged engine intake filter media |
JP2014504198A (ja) | 2010-10-25 | 2014-02-20 | チャップマン、リック、エル | 戦略的に形成された繊維および/または荷電制御剤を含む繊維混合物を用いたろ過材料 |
CN114345554A (zh) | 2015-04-14 | 2022-04-15 | 环境管理联合公司 | 用于极化空气净化器的波纹状过滤介质 |
JP2022501190A (ja) * | 2018-08-03 | 2022-01-06 | エンヴァイロメンタル マネージメント コンフェデレーション, インコーポレーテッドEnvironmental Management Confederation, Inc. | スクリムレスフィルタ媒体および/またはアラミドフィルタ媒体 |
CN110369138B (zh) * | 2019-07-19 | 2020-11-10 | 湖州越彬智能科技有限公司 | 一种纺织机粉尘回收系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2190689A (en) * | 1986-05-19 | 1987-11-25 | Nat Res Dev | Blended fibre filter material |
DE4321289A1 (de) * | 1993-06-26 | 1995-01-05 | Hoechst Ag | Elektretfasern mit verbesserter Ladungsstabilität, Verfahren zu ihrer Herstellung, und Textilmaterial enthaltend diese Elektretfasern |
WO1997044509A1 (fr) * | 1996-05-24 | 1997-11-27 | Kimberly-Clark Worldwide, Inc. | Fibres ferroelectriques et leurs applications |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1574041A (en) * | 1976-01-30 | 1980-09-03 | Asahi Chemical Ind | Composite fabric and method for producing the same |
US4146663A (en) * | 1976-08-23 | 1979-03-27 | Asahi Kasei Kogyo Kabushiki Kaisha | Composite fabric combining entangled fabric of microfibers and knitted or woven fabric and process for producing same |
JPS6037029B2 (ja) * | 1978-01-10 | 1985-08-23 | 東洋紡績株式会社 | 流体分離用糸条パツケ−ジの製造法 |
JPH0729029B2 (ja) * | 1986-06-20 | 1995-04-05 | 東洋紡績株式会社 | 中空糸型膜分離装置 |
USH1162H (en) * | 1986-09-11 | 1993-04-06 | Molded composite article and process for producing the same | |
US5037455A (en) * | 1990-09-14 | 1991-08-06 | The Great American Filter Company | Air filter |
US5240479A (en) * | 1991-05-17 | 1993-08-31 | Donaldson Company, Inc. | Pleated filter media having a continuous bead of adhesive between layers of filtering material |
US5419953A (en) * | 1993-05-20 | 1995-05-30 | Chapman; Rick L. | Multilayer composite air filtration media |
JP3311091B2 (ja) * | 1993-06-27 | 2002-08-05 | テルモ株式会社 | 白血球分離用フィルター並びに白血球および血小板分離用フィルター |
US5707520A (en) * | 1993-06-27 | 1998-01-13 | Terumo Kabushiki Kaisha | Remover unit for use in filtration circuit for removing at least leukocyte |
DE4407344C1 (de) * | 1994-03-05 | 1995-05-11 | Freudenberg Carl Fa | Luftfiltermaterial, seine Verwendung und Herstellung |
JP4223084B2 (ja) * | 1997-07-24 | 2009-02-12 | デュポン帝人アドバンスドペーパー株式会社 | 電池セパレーター |
EP0896026B1 (fr) * | 1997-08-08 | 2006-06-07 | Mitsui Chemicals, Inc. | Composition à base de polymère de 4-méthyl-1-pentène et multicouches et adhésives utilisant cette composition |
-
1998
- 1998-05-13 US US09/700,212 patent/US6328788B1/en not_active Expired - Lifetime
- 1998-05-13 AU AU74208/98A patent/AU7420898A/en not_active Abandoned
- 1998-05-13 CA CA002330805A patent/CA2330805C/fr not_active Expired - Lifetime
- 1998-05-13 JP JP2000548068A patent/JP2002514494A/ja active Pending
- 1998-05-13 EP EP98921296A patent/EP1085934B1/fr not_active Expired - Lifetime
- 1998-05-13 WO PCT/CA1998/000470 patent/WO1999058224A1/fr active IP Right Grant
- 1998-05-13 DE DE69804361T patent/DE69804361T2/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2190689A (en) * | 1986-05-19 | 1987-11-25 | Nat Res Dev | Blended fibre filter material |
DE4321289A1 (de) * | 1993-06-26 | 1995-01-05 | Hoechst Ag | Elektretfasern mit verbesserter Ladungsstabilität, Verfahren zu ihrer Herstellung, und Textilmaterial enthaltend diese Elektretfasern |
WO1997044509A1 (fr) * | 1996-05-24 | 1997-11-27 | Kimberly-Clark Worldwide, Inc. | Fibres ferroelectriques et leurs applications |
Non-Patent Citations (1)
Title |
---|
P.A.SMITH ET AL: "Generation of triboelectric charge in textile fibre mixtures, and their use as air filters", JOURNAL OF ELECTROSTATICS, vol. 21, 1988, pages 81 - 98, XP000007542 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6419729B1 (en) | 2000-04-17 | 2002-07-16 | 3M Innovative Properties Company | Filter assemblies with adhesive attachment systems |
WO2002034364A1 (fr) * | 2000-10-26 | 2002-05-02 | Tesa Ag | Charge triboelectrique de tissus et de maillages |
US7004995B2 (en) * | 2000-10-26 | 2006-02-28 | Tesa Aktiengesellschaft | Triboelectric charging of wovens and knitted fabrics |
Also Published As
Publication number | Publication date |
---|---|
CA2330805C (fr) | 2003-09-02 |
EP1085934B1 (fr) | 2002-03-20 |
US6328788B1 (en) | 2001-12-11 |
DE69804361T2 (de) | 2002-10-10 |
DE69804361D1 (de) | 2002-04-25 |
EP1085934A1 (fr) | 2001-03-28 |
JP2002514494A (ja) | 2002-05-21 |
AU7420898A (en) | 1999-11-29 |
CA2330805A1 (fr) | 1999-11-18 |
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