CA2544065C - Filtration element having a variable density sidewall - Google Patents

Filtration element having a variable density sidewall Download PDF

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Publication number
CA2544065C
CA2544065C CA2544065A CA2544065A CA2544065C CA 2544065 C CA2544065 C CA 2544065C CA 2544065 A CA2544065 A CA 2544065A CA 2544065 A CA2544065 A CA 2544065A CA 2544065 C CA2544065 C CA 2544065C
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CA
Canada
Prior art keywords
filaments
filter
strands
upstream side
bag
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.)
Active
Application number
CA2544065A
Other languages
English (en)
French (fr)
Other versions
CA2544065A1 (en
Inventor
Howard William Morgan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pall Corp
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2544065A1 publication Critical patent/CA2544065A1/en
Application granted granted Critical
Publication of CA2544065C publication Critical patent/CA2544065C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0001—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/18—Filters characterised by the openings or pores
    • B01D2201/188—Multiple filtering elements having filtering areas of different size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/10—Multiple layers
    • B01D2275/105—Wound layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/30—Porosity of filtering material
    • B01D2275/305—Porosity decreasing in flow direction

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
CA2544065A 2005-04-19 2006-04-19 Filtration element having a variable density sidewall Active CA2544065C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US67289405P 2005-04-19 2005-04-19
US60/672,894 2005-04-19
US11/255,585 2005-10-21
US11/255,585 US20060230727A1 (en) 2005-04-19 2005-10-21 Filtration element having a variable density sidewall

Publications (2)

Publication Number Publication Date
CA2544065A1 CA2544065A1 (en) 2006-10-19
CA2544065C true CA2544065C (en) 2013-05-21

Family

ID=37114214

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2544065A Active CA2544065C (en) 2005-04-19 2006-04-19 Filtration element having a variable density sidewall

Country Status (6)

Country Link
US (2) US20060230727A1 (enExample)
EP (1) EP1728543A3 (enExample)
JP (1) JP2006297389A (enExample)
CN (1) CN1864803A (enExample)
BR (1) BRPI0601299A (enExample)
CA (1) CA2544065C (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106693554A (zh) * 2017-01-23 2017-05-24 王宇轩 一种基于丝线过滤的空气净化器

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL51212A (en) * 1976-01-14 1980-03-31 Pall Corp Filter elements and process for their continuous production by laydown of thermoplastic fibers on a preformed core to form a nonwoven cylindrical web
US4726901A (en) * 1984-01-06 1988-02-23 Pall Corporation Cylindrical fibrous structures with graded pore size
US4594202A (en) * 1984-01-06 1986-06-10 Pall Corporation Method of making cylindrical fibrous filter structures
US4536439A (en) * 1985-01-07 1985-08-20 E. I. Du Pont De Nemours And Company Light weight filter felt
US4661132A (en) * 1985-08-15 1987-04-28 Allied Corporation Themally formed gradient density filter
US4612237A (en) * 1985-12-13 1986-09-16 E. I. Du Pont De Nemours And Company Hydraulically entangled PTFE/glass filter felt
US5352517A (en) * 1986-03-24 1994-10-04 Ensci, Inc. Iron oxide coated substrates
JPH0791754B2 (ja) * 1988-06-21 1995-10-04 ユニ・チャーム株式会社 複合不織布
JPH0798131B2 (ja) * 1991-03-15 1995-10-25 チッソ株式会社 筒状フィルター及びその製造方法
US5290628A (en) * 1992-11-10 1994-03-01 E. I. Du Pont De Nemours And Company Hydroentangled flash spun webs having controllable bulk and permeability
US6146436A (en) * 1994-08-05 2000-11-14 Firma Carl Freudenberg Cartridge filter
WO1997037071A1 (fr) * 1994-09-28 1997-10-09 Toray Industries, Inc. Textile non-tisse pour filtre plisse et procede de fabrication
JPH08309124A (ja) * 1995-05-12 1996-11-26 Toyobo Co Ltd 円筒型フィルター濾材およびその製造法
US6171684B1 (en) * 1995-11-17 2001-01-09 Donaldson Company, Inc. Filter material construction and method
US5665479A (en) * 1995-12-12 1997-09-09 N.V. Bekaert S.A. Sintered multilayer metal fiber web
JP3700312B2 (ja) * 1996-04-19 2005-09-28 住友電気工業株式会社 Ｆｅ金属多孔体の製造方法
US6657229B1 (en) * 1996-05-28 2003-12-02 United Microelectronics Corporation Semiconductor device having multiple transistors sharing a common gate
JP3686918B2 (ja) * 1996-10-16 2005-08-24 森村興産株式会社 汚水、廃水等の固液分離用濾過装置
JPH1136169A (ja) * 1997-07-15 1999-02-09 Tounen Tapirusu Kk メルトブロー不織布の製造方法及びメルトブロー不織布からなる円筒状フィルター
JPH11156125A (ja) * 1997-12-01 1999-06-15 Roki Techno Co Ltd デプス型フイルター
US6010604A (en) * 1998-02-04 2000-01-04 Stauffer; John E. Neural network packing
DE19843000C2 (de) * 1998-09-21 2000-07-13 Freudenberg Carl Fa Luftfilter
AR024848A1 (es) 1998-12-19 2002-10-30 Kimberly Clark Co Tejido de fibras finas de multicomponentes y los laminados de los mismos.
US6231646B1 (en) * 1999-03-11 2001-05-15 Chemco Manufacturing Company, Inc. Paint overspray exhaust air filter
US6165244A (en) * 1999-03-13 2000-12-26 Aaf International, Inc. Filter media with fluid stream positioned fibers
US6409785B1 (en) * 2000-08-07 2002-06-25 Bha Technologies, Inc. Cleanable HEPA filter media
JP2002146659A (ja) * 2000-11-07 2002-05-22 Sumitomo Electric Ind Ltd 金属不織布及びその製造方法
US6936554B1 (en) * 2000-11-28 2005-08-30 Kimberly-Clark Worldwide, Inc. Nonwoven fabric laminate with meltblown web having a gradient fiber size structure
US20030084788A1 (en) * 2001-06-22 2003-05-08 Fraser Ladson L Foam coated air filtration media
US6736914B2 (en) * 2001-12-20 2004-05-18 Aaf-Mcquay, Inc. Series arrangement for forming layered fibrous mat of differing fibers and controlled surfaces
US6926828B2 (en) * 2002-01-25 2005-08-09 Inoac Corporation Fluid filter
DE10221694B4 (de) * 2002-05-16 2018-07-12 Branofilter Gmbh Mehrlagiger Filteraufbau, Verwendung eines solchen mehrlagigen Filteraufbaus, Staubfilterbeutel, Taschenfilterbeutel, plissierter Filter, flächiger Abluftfilter und Luftfilter für Kraftfahrzeuge
JP3802839B2 (ja) * 2002-05-24 2006-07-26 呉羽テック株式会社 フィルター用不織布及びエンジン用フィルター
EP1366791B1 (de) * 2002-05-28 2008-03-26 Hollingsworth & Vose GmbH Filtermedium
DE102005017265A1 (de) * 2004-05-11 2005-12-01 Robert Bosch Gmbh Vorrichtung zur Reinigung von Gasgemischen und Verfahren zu deren Herstellung

Also Published As

Publication number Publication date
BRPI0601299A (pt) 2006-12-19
US20060230727A1 (en) 2006-10-19
JP2006297389A (ja) 2006-11-02
CA2544065A1 (en) 2006-10-19
EP1728543A2 (en) 2006-12-06
US20100193427A1 (en) 2010-08-05
EP1728543A3 (en) 2007-10-10
US7955407B2 (en) 2011-06-07
CN1864803A (zh) 2006-11-22

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