EP3487602A4 - Multi-layered electret-containing filtration media - Google Patents

Multi-layered electret-containing filtration media Download PDF

Info

Publication number
EP3487602A4
EP3487602A4 EP17831940.6A EP17831940A EP3487602A4 EP 3487602 A4 EP3487602 A4 EP 3487602A4 EP 17831940 A EP17831940 A EP 17831940A EP 3487602 A4 EP3487602 A4 EP 3487602A4
Authority
EP
European Patent Office
Prior art keywords
filtration media
containing filtration
electret
layered
layered electret
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.)
Pending
Application number
EP17831940.6A
Other languages
German (de)
French (fr)
Other versions
EP3487602A1 (en
Inventor
Sudheer Jinka
David T. Healey
Mark A. GALLIMORE
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.)
Hollingsworth and Vose Co
Original Assignee
Hollingsworth and Vose Co
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
Priority claimed from US15/217,718 external-priority patent/US20180001247A1/en
Application filed by Hollingsworth and Vose Co filed Critical Hollingsworth and Vose Co
Publication of EP3487602A1 publication Critical patent/EP3487602A1/en
Publication of EP3487602A4 publication Critical patent/EP3487602A4/en
Pending legal-status Critical Current

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
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0435—Electret
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0659—The layers being joined by needling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1258—Permeability

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Laminated Bodies (AREA)
EP17831940.6A 2016-07-22 2017-07-21 Multi-layered electret-containing filtration media Pending EP3487602A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/217,718 US20180001247A1 (en) 2016-07-01 2016-07-22 Multi-layered electret-containing filtration media
PCT/US2017/043249 WO2018017937A1 (en) 2016-07-22 2017-07-21 Multi-layered electret-containing filtration media

Publications (2)

Publication Number Publication Date
EP3487602A1 EP3487602A1 (en) 2019-05-29
EP3487602A4 true EP3487602A4 (en) 2020-01-15

Family

ID=60996051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17831940.6A Pending EP3487602A4 (en) 2016-07-22 2017-07-21 Multi-layered electret-containing filtration media

Country Status (3)

Country Link
EP (1) EP3487602A4 (en)
CN (1) CN109475798A (en)
WO (1) WO2018017937A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3585499A4 (en) * 2017-02-21 2020-12-23 Hollingsworth & Vose Company Electret-containing filter media
US20230173215A1 (en) 2021-12-08 2023-06-08 Ambu A/S Medical airway device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5672188A (en) * 1996-05-28 1997-09-30 Aaf International High capacity filter media
US20150121823A1 (en) * 2007-02-28 2015-05-07 Hollingsworth & Vose Company Waved filter media and elements

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101652168A (en) * 2007-02-22 2010-02-17 唐纳森公司 Filter element and method thereof
US8986432B2 (en) * 2007-11-09 2015-03-24 Hollingsworth & Vose Company Meltblown filter medium, related applications and uses
US8679218B2 (en) * 2010-04-27 2014-03-25 Hollingsworth & Vose Company Filter media with a multi-layer structure
US9149749B2 (en) * 2012-11-13 2015-10-06 Hollingsworth & Vose Company Pre-coalescing multi-layered filter media
US20160166953A1 (en) * 2014-12-15 2016-06-16 Hollingsworth & Vose Company Filter media including fine staple fibers
US10343095B2 (en) * 2014-12-19 2019-07-09 Hollingsworth & Vose Company Filter media comprising a pre-filter layer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5672188A (en) * 1996-05-28 1997-09-30 Aaf International High capacity filter media
US20150121823A1 (en) * 2007-02-28 2015-05-07 Hollingsworth & Vose Company Waved filter media and elements

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018017937A1 *

Also Published As

Publication number Publication date
WO2018017937A1 (en) 2018-01-25
CN109475798A (en) 2019-03-15
EP3487602A1 (en) 2019-05-29

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