EP3585499A4 - Electret-containing filter media - Google Patents

Electret-containing filter media Download PDF

Info

Publication number: EP3585499A4
Authority: EP; European Patent Office
Prior art keywords: electret; filter media; containing filter; media; filter
Prior art date: 2017-02-21
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.)

2017-02-21

Filing date

2018-02-21

Publication date

2020-12-23

2017-02-21 Priority claimed from US15/438,042 external-priority patent/US11077394B2/en

2017-02-21 Priority claimed from US15/438,028 external-priority patent/US10814261B2/en

2017-10-23 Priority claimed from US15/790,651 external-priority patent/US20180236385A1/en

2018-02-21 Application filed by Hollingsworth and Vose Co filed Critical Hollingsworth and Vose Co

2020-01-01 Publication of EP3585499A1 publication Critical patent/EP3585499A1/en

2020-12-23 Publication of EP3585499A4 publication Critical patent/EP3585499A4/en

Status Pending legal-status Critical Current

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
US15/438,042 US11077394B2 (en)	2017-02-21	2017-02-21	Electret-containing filter media
US15/438,028 US10814261B2 (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 (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US11420143B2 (en)	2018-11-05	2022-08-23	Hollingsworth & Vose Company	Filter media with irregular structure and/or reversibly stretchable layers
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
EP4146369A1 (en) *	2020-05-04	2023-03-15	Hollingsworth & Vose Company	Filter media with irregular structure and/or reversibly stretchable layers
CN115667609A (en) *	2020-06-26	2023-01-31	捷普有限公司	Polyester/poly (methyl methacrylate) articles and methods of making the 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 (5)

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Publication number	Priority date	Publication date	Assignee	Title
US5898981A (en) *	1996-04-30	1999-05-04	Minnesota Mining & Manufacturing Company	Synthetic filter media and method for manufacturing same
WO1999052619A1 (en) *	1998-04-08	1999-10-21	All-Felt Filtration, Llc	Enhanced electret needled filtration media composites
EP2060311B1 (en) *	2007-11-14	2011-05-11	Wolf PVG GmbH & Co. Kommanditgesellschaft	Air filter medium
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

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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
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
CN100377760C (en) *	2002-09-16	2008-04-02	特里奥辛控股有限公司	Electrostatically charged filter media incorporating an active agent
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
CN101939072B (en) *	2007-11-09	2017-04-05	霍林斯沃思和沃斯有限公司	Meltblown filter medium
US8679218B2 (en) *	2010-04-27	2014-03-25	Hollingsworth & Vose Company	Filter media with a multi-layer structure
KR20130091734A (en) *	2010-07-07	2013-08-19	쓰리엠 이노베이티브 프로퍼티즈 컴파니	Patterned air-laid nonwoven electret fibrous webs and methods of making and using same
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
EP3487602A4 (en) *	2016-07-22	2020-01-15	Hollingsworth & Vose Company	Multi-layered electret-containing filtration media

2018
- 2018-02-21 CN CN202211237409.6A patent/CN115646068A/en active Pending
- 2018-02-21 WO PCT/US2018/018924 patent/WO2018156561A1/en unknown
- 2018-02-21 EP EP18757748.1A patent/EP3585499A4/en active Pending
- 2018-02-21 CN CN201880025705.5A patent/CN110545894B/en active Active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5898981A (en) *	1996-04-30	1999-05-04	Minnesota Mining & Manufacturing Company	Synthetic filter media and method for manufacturing same
WO1999052619A1 (en) *	1998-04-08	1999-10-21	All-Felt Filtration, Llc	Enhanced electret needled filtration media composites
EP2060311B1 (en) *	2007-11-14	2011-05-11	Wolf PVG GmbH & Co. Kommanditgesellschaft	Air filter medium
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
CN110545894B (en)	2022-10-28
CN110545894A (en)	2019-12-06
EP3585499A1 (en)	2020-01-01
WO2018156561A1 (en)	2018-08-30

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Legal Events

Date	Code	Title	Description
2018-09-01	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2019-12-05	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2019-12-05	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2020-01-01	17P	Request for examination filed	Effective date: 20190920
2020-01-01	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2020-01-01	AX	Request for extension of the european patent	Extension state: BA ME
2020-05-27	DAV	Request for validation of the european patent (deleted)
2020-05-27	DAX	Request for extension of the european patent (deleted)
2020-12-23	A4	Supplementary search report drawn up and despatched	Effective date: 20201119
2020-12-23	RIC1	Information provided on ipc code assigned before grant	Ipc: B01D 39/16 20060101ALI20201113BHEP Ipc: B01D 46/00 20060101AFI20201113BHEP
2023-01-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: EXAMINATION IS IN PROGRESS
2023-03-01	17Q	First examination report despatched	Effective date: 20230131