EP3585499A4 - Electret-containing filter media - Google Patents

Electret-containing filter media Download PDF

Info

Publication number
EP3585499A4
EP3585499A4 EP18757748.1A EP18757748A EP3585499A4 EP 3585499 A4 EP3585499 A4 EP 3585499A4 EP 18757748 A EP18757748 A EP 18757748A EP 3585499 A4 EP3585499 A4 EP 3585499A4
Authority
EP
European Patent Office
Prior art keywords
electret
filter media
containing filter
media
filter
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
EP18757748.1A
Other languages
German (de)
French (fr)
Other versions
EP3585499A1 (en
Inventor
Sudheer Jinka
Bruce Smith
Jeremy Andrew Collingwood
Mark GALLIMORE
Syed Gulrez
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 US15/438,028 external-priority patent/US10814261B2/en
Priority claimed from US15/438,042 external-priority patent/US11077394B2/en
Priority claimed from US15/790,651 external-priority patent/US20180236385A1/en
Application filed by Hollingsworth and Vose Co filed Critical Hollingsworth and Vose Co
Publication of EP3585499A1 publication Critical patent/EP3585499A1/en
Publication of EP3585499A4 publication Critical patent/EP3585499A4/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
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/064—The fibres being mixed
    • 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
    • B01D2239/0654—Support layers
    • 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)
EP18757748.1A 2017-02-21 2018-02-21 Electret-containing filter media Pending EP3585499A4 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US15/438,028 US10814261B2 (en) 2017-02-21 2017-02-21 Electret-containing filter media
US15/438,042 US11077394B2 (en) 2017-02-21 2017-02-21 Electret-containing filter media
US15/790,651 US20180236385A1 (en) 2017-02-21 2017-10-23 Electret-containing filter media
PCT/US2018/018924 WO2018156561A1 (en) 2017-02-21 2018-02-21 Electret-containing filter media

Publications (2)

Publication Number Publication Date
EP3585499A1 EP3585499A1 (en) 2020-01-01
EP3585499A4 true EP3585499A4 (en) 2020-12-23

Family

ID=63254432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18757748.1A Pending EP3585499A4 (en) 2017-02-21 2018-02-21 Electret-containing filter media

Country Status (3)

Country Link
EP (1) EP3585499A4 (en)
CN (2) CN115646068A (en)
WO (1) WO2018156561A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210187421A1 (en) * 2019-12-19 2021-06-24 Hollingsworth & Vose Company Filter media comprising a non-wetlaid backer
CN111495035B (en) * 2020-02-28 2022-09-06 中科贝思达（厦门）环保科技股份有限公司 Electret nanofiber air filtering material and preparation method thereof
CN115397539A (en) * 2020-05-04 2022-11-25 霍林斯沃思和沃斯有限公司 Filter media with irregular structure and/or reversibly stretchable layer
KR102569112B1 (en) * 2020-06-26 2023-08-22 자빌 인코퍼레이티드 Improved meltblown articles and methods of forming same
WO2022064332A1 (en) * 2020-09-22 2022-03-31 3M Innovative Properties Company Filter with electret additives
RU205640U1 (en) * 2020-12-03 2021-07-26 Ольга Александровна Лещинская ELECTROSTATIC FILTER

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052619A1 (en) * 1998-04-08 1999-10-21 All-Felt Filtration, Llc Enhanced electret needled filtration media composites
EP2567744A1 (en) * 2010-05-07 2013-03-13 Japan Vilene Company, Ltd. Electrically charged filter and mask
WO2016017484A1 (en) * 2014-07-30 2016-02-04 日本バイリーン株式会社 Filtration material, filter element using same, and manufacturing method of filtration material

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54112071A (en) * 1978-02-22 1979-09-01 Mitsui Petrochemical Ind Method of filtering liquid
US5277976A (en) * 1991-10-07 1994-01-11 Minnesota Mining And Manufacturing Company Oriented profile fibers
US5898981A (en) * 1996-04-30 1999-05-04 Minnesota Mining & Manufacturing Company Synthetic filter media and method for manufacturing same
GB9815629D0 (en) 1998-07-18 1998-09-16 Hepworth Minerals & Chemicals Filter materials and methods for the producton thereof
US6537614B1 (en) * 1998-12-18 2003-03-25 Kimberly-Clark Worldwide, Inc. Cationically charged coating on hydrophobic polymer fibers with poly (vinyl alcohol) assist
CN101306278B (en) * 2002-09-16 2011-08-17 特里奥辛控股有限公司 Mask and filter closure combination
US7244292B2 (en) * 2005-05-02 2007-07-17 3M Innovative Properties Company Electret article having heteroatoms and low fluorosaturation ratio
US8202340B2 (en) * 2007-02-28 2012-06-19 Hollingsworth & Vose Company Waved filter media and elements
US8257459B2 (en) * 2007-02-28 2012-09-04 Hollingsworth & Vose Company Waved filter media and elements
US8608817B2 (en) 2007-11-09 2013-12-17 Hollingsworth & Vose Company Meltblown filter medium
US8679218B2 (en) * 2010-04-27 2014-03-25 Hollingsworth & Vose Company Filter media with a multi-layer structure
BR112013000010A2 (en) * 2010-07-07 2016-05-10 3M Innovative Properties Co fibrous nonwoven electret blankets and method for making a fibrous nonwoven electret mat
US20120152824A1 (en) 2010-12-17 2012-06-21 Hollingsworth & Vose Company Fine fiber filter media and processes
US20120152821A1 (en) 2010-12-17 2012-06-21 Hollingsworth & Vose Company Fine fiber filter media and processes
US9694306B2 (en) * 2013-05-24 2017-07-04 Hollingsworth & Vose Company Filter media including polymer compositions and blends
CN105214510B (en) * 2014-04-15 2017-05-03 纳米新能源（唐山）有限责任公司 PM2.5 filter membrane based on friction power generation and preparation method therefor
CN105013248A (en) * 2014-04-20 2015-11-04 汪涛 Air filtering material and production method thereof
US20160199765A1 (en) * 2015-01-08 2016-07-14 Panasonic Intellectual Property Management Co., Ltd. Nonwoven fabric, air purifier using the same, and method for producing nonwoven fabric
CN105771427B (en) * 2016-04-16 2018-05-15 青岛锦美盛无纺布有限公司 A kind of air filtration non-woven electret filtering material
WO2018017937A1 (en) * 2016-07-22 2018-01-25 Hollingsworth & Vose Company Multi-layered electret-containing filtration media

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052619A1 (en) * 1998-04-08 1999-10-21 All-Felt Filtration, Llc Enhanced electret needled filtration media composites
EP2567744A1 (en) * 2010-05-07 2013-03-13 Japan Vilene Company, Ltd. Electrically charged filter and mask
WO2016017484A1 (en) * 2014-07-30 2016-02-04 日本バイリーン株式会社 Filtration material, filter element using same, and manufacturing method of filtration material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018156561A1 *

Also Published As

Publication number Publication date
CN115646068A (en) 2023-01-31
EP3585499A1 (en) 2020-01-01
CN110545894B (en) 2022-10-28
WO2018156561A1 (en) 2018-08-30
CN110545894A (en) 2019-12-06

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