EP1085934B1 - Filtre a air triboelectrique - Google Patents
Filtre a air triboelectrique Download PDFInfo
- Publication number
- EP1085934B1 EP1085934B1 EP98921296A EP98921296A EP1085934B1 EP 1085934 B1 EP1085934 B1 EP 1085934B1 EP 98921296 A EP98921296 A EP 98921296A EP 98921296 A EP98921296 A EP 98921296A EP 1085934 B1 EP1085934 B1 EP 1085934B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- fibers
- triboelectric
- air filter
- filters
- 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.)
- Expired - Lifetime
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 air filter triboelectric.
- electrostatic filters are indeed capable of capturing a greater number of dusts than filters classics that do not have electrical charges. This difference is explained by the fact that attractive forces are exerted between the matter of filter and the dust which naturally also contains electrical charges.
- the first of these is to produce an imbalance permanent, at the molecular level, between the electrical charges of a material given.
- the product obtained with this method is usually referred to as the name "electret”.
- the second method is to implant ions, normally by bombardment, in the material constituting the filter.
- the third method exploits the principle of triboelectricity, that electrical charges appearing when at least two different materials are rubbed together.
- the products obtained by this third method are usually referred to as "filters triboelectric ".
- a filter should ideally have a high number of charges which produce intense electrostatic fields and this, for a time at least equal to the lifetime of the filter.
- the subject of the invention is therefore an air filter of the triboelectric type, characterized in that it consists essentially of a mixture of fibers of polypropylene with polymetaphenylene isophthalamide fibers.
- the triboelectric air filter according to the invention consists of a mixture of polypropylene fibers (1) with fibers (2) of polymetaphenylene isophthalamide.
- This mixture is preferably in the form of a nonwoven with a weight ratio of fibers (2) to 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 above analyzed.
- fiber (1) or (2) can be used.
- fibers (2) of polymetaphenylene isophthalamide use will preferably be made of those marketed under the trade names NOMEX® , APYEIL® and 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 loss of charge are usually between 0.1 to 2 mm of water.
- these characteristics are stable over time.
- the fibers (2) had a titer of 1.5 deniers; fibers (1) had a 3 denier titer F2 Identical to F1 filter with, in addition, an anti-static agent to inhibit electrical charges.
- F3 Filter with a surface mass 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:
- This quality factor makes it possible to classify the performance of the filters. More the higher the value of "Q", the higher the quality of the filter.
- the filter F1 according to the invention has been found more efficient than the known filter F3.
- the poor results obtained with the filter F2 confirm that electrical charges have an important influence on filtration performance.
- the performance of the filter F1 according to the invention has shown good stability over time. This filter kept for two years, showed no significant difference between the initial value of effectiveness and measures 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
IDENTIFICATION DES FILTRES | |
F1 | Filtre selon l'invention sous la forme d'un non-tissé ayant une masse surfacique de 135 g/m2 et un rapport en poids fibres (2) aux fibres (1) égal à 10:90. Les fibres (2) avaient un titre de 1.5 deniers; les fibres (1) avaient un titre de 3 deniers |
F2 | Filtre identique à F1 avec, en outre, un agent anti-statique pour inhiber les charges électriques. |
F3 | Filtre de masse surfacique égale à 135 g/m2, disponible sur le marché et produit par un procédé triboélectrique tel que décrit dans le brevet US 5 470 485. |
Identification | Masse surfacique (g/m2) | Efficacité (%) | Perte de pression (mm d'eau) | Facteur de qualité |
F1 | 135 | 98 | 0.5 | 7.8 |
F2 | 135 | 46 | 0.5 | 0.8 |
F3 | 135 | 94 | 0.4 | 7.0 |
Claims (5)
- Un filtre à air de type triboélectrique, qui est essentiellement constitué d'un mélange de fibres (1) de polypropylène avec des fibres (2) de polymétaphénylène isophtalamide.
- Le filtre de la revendication 1, caractérisé en ce que les fibres (1) et (2) sont présentes dans des quantités telles que le rapport en poids des fibres (2) aux fibres (1) est compris entre 5:95 et 50:50.
- Le filtre de la revendication 2, caractérisé en ce que ledit rapport est compris entre 10:90 et 30:70.
- Le filtre de la revendication 1, 2 ou 3, caractérisé en ce qu'il a une masse surfacique comprise entre 15 et 500 g/m2.
- Le filtre de la revendication 1, 2, 3 ou 4, caractérisé en ce qu'il se présente sous la forme d'un non-tissé.
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 (2)
Publication Number | Publication Date |
---|---|
EP1085934A1 EP1085934A1 (fr) | 2001-03-28 |
EP1085934B1 true EP1085934B1 (fr) | 2002-03-20 |
Family
ID=4173296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98921296A Expired - Lifetime EP1085934B1 (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) |
Families Citing this family (16)
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 |
US7004995B2 (en) * | 2000-10-26 | 2006-02-28 | Tesa Aktiengesellschaft | Triboelectric charging of wovens and knitted fabrics |
US6808548B2 (en) * | 2002-12-31 | 2004-10-26 | Hollinee Glass Corporation | Three component filtration material |
CN1780674A (zh) * | 2002-12-31 | 2006-05-31 | 埃尔斯特罗姆空气媒介有限公司 | 两纤维过滤材料 |
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 |
US8814994B2 (en) | 2005-12-29 | 2014-08-26 | Environmental Management Confederation, Inc. | Active field polarized media air cleaner |
US9789494B2 (en) | 2005-12-29 | 2017-10-17 | Environmental Management Confederation, Inc. | Active field polarized media air cleaner |
KR101434851B1 (ko) * | 2005-12-29 | 2014-09-02 | 인바이런멘탈 메니지먼트 컨피더레이션, 인크. | 액티브 전계 분극 매체 공기정화기 |
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 |
US20090095160A1 (en) * | 2007-10-12 | 2009-04-16 | Ronald Troxell | Electrostatically charged engine intake filter media |
CA2815801C (fr) | 2010-10-25 | 2019-07-09 | Rick L. Chapman | Materiau de filtration utilisant des melanges de fibres qui contiennent des fibres ayant une forme strategique et/ou des agents permettant de supprimer les charges |
CA2982544C (fr) | 2015-04-14 | 2019-09-24 | Environmental Management Confederation, Inc. | Milieu de filtration ondule pour nettoyeur d'air a polarisation |
AU2019314565A1 (en) | 2018-08-03 | 2021-03-18 | Environmental Management Confederation, Inc. | Scrimless and/or aramid filter media |
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*** |
Family Cites Families (16)
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 |
GB8612070D0 (en) | 1986-05-19 | 1986-06-25 | Brown R C | Blended-fibre filter material |
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 |
DE4321289A1 (de) | 1993-06-26 | 1995-01-05 | Hoechst Ag | Elektretfasern mit verbesserter Ladungsstabilität, Verfahren zu ihrer Herstellung, und Textilmaterial enthaltend diese Elektretfasern |
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 |
US6162535A (en) | 1996-05-24 | 2000-12-19 | Kimberly-Clark Worldwide, Inc. | Ferroelectric fibers and applications therefor |
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 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 US US09/700,212 patent/US6328788B1/en 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
Also Published As
Publication number | Publication date |
---|---|
AU7420898A (en) | 1999-11-29 |
CA2330805A1 (fr) | 1999-11-18 |
US6328788B1 (en) | 2001-12-11 |
DE69804361D1 (de) | 2002-04-25 |
DE69804361T2 (de) | 2002-10-10 |
EP1085934A1 (fr) | 2001-03-28 |
JP2002514494A (ja) | 2002-05-21 |
WO1999058224A1 (fr) | 1999-11-18 |
CA2330805C (fr) | 2003-09-02 |
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