SG64858A1 - Process for producing an electret, a film electret, and an electret filter - Google Patents

Process for producing an electret, a film electret, and an electret filter

Info

Publication number
SG64858A1
SG64858A1 SG9601215A SG1996001215A SG64858A1 SG 64858 A1 SG64858 A1 SG 64858A1 SG 9601215 A SG9601215 A SG 9601215A SG 1996001215 A SG1996001215 A SG 1996001215A SG 64858 A1 SG64858 A1 SG 64858A1
Authority
SG
Singapore
Prior art keywords
electret
film
producing
article
produce
Prior art date
Application number
SG9601215A
Other languages
English (en)
Inventor
Matsuura Satoshi
Shinagawa Yoshio
Original Assignee
Mitsui Chemicals Inc
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 Mitsui Chemicals Inc filed Critical Mitsui Chemicals Inc
Publication of SG64858A1 publication Critical patent/SG64858A1/en

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
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
    • 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
    • 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
    • B01D2239/10—Filtering material manufacturing
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/08—Fibrillating cellular materials
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/48—Processes of making filters
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/05—Methods of making filter
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/39—Electrets separator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Filtering Materials (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Artificial Filaments (AREA)
SG9601215A 1990-03-12 1991-03-12 Process for producing an electret, a film electret, and an electret filter SG64858A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6070590 1990-03-12
JP31318290 1990-11-19

Publications (1)

Publication Number Publication Date
SG64858A1 true SG64858A1 (en) 2001-03-20

Family

ID=26401762

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9601215A SG64858A1 (en) 1990-03-12 1991-03-12 Process for producing an electret, a film electret, and an electret filter

Country Status (7)

Country Link
US (1) US5256176A (de)
EP (1) EP0447166B1 (de)
AT (1) ATE139054T1 (de)
CA (1) CA2037942A1 (de)
DE (1) DE69119948T2 (de)
HK (1) HK14197A (de)
SG (1) SG64858A1 (de)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04330907A (ja) * 1991-05-02 1992-11-18 Mitsui Petrochem Ind Ltd エレクトレットフィルターの製造方法
WO1994003276A1 (en) * 1992-07-30 1994-02-17 E.V.E. Holdings Limited Electrostatic filter
US5401446A (en) * 1992-10-09 1995-03-28 The University Of Tennessee Research Corporation Method and apparatus for the electrostatic charging of a web or film
US5863312A (en) * 1992-10-23 1999-01-26 Wolfe; Michael Non-entraining filter
KR100336012B1 (ko) * 1993-08-17 2002-10-11 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 일렉트릿필터매체를하전시키는방법
CA2124237C (en) 1994-02-18 2004-11-02 Bernard Cohen Improved nonwoven barrier and method of making the same
CA2136576C (en) 1994-06-27 2005-03-08 Bernard Cohen Improved nonwoven barrier and method of making the same
AU4961696A (en) 1994-12-08 1996-06-26 Kimberly-Clark Worldwide, Inc. Method of forming a particle size gradient in an absorbent article
CA2153278A1 (en) 1994-12-30 1996-07-01 Bernard Cohen Nonwoven laminate barrier material
KR100340352B1 (ko) * 1995-02-21 2005-02-02 니혼바이린 가부시기가이샤 피처리유전체로일렉트릿물체를제조하는방법및그제조장치
US5645627A (en) * 1995-02-28 1997-07-08 Hollingsworth & Vose Company Charge stabilized electret filter media
WO1996037276A1 (en) 1995-05-25 1996-11-28 Kimberly-Clark Worldwide, Inc. Filter matrix
ZA965786B (en) 1995-07-19 1997-01-27 Kimberly Clark Co Nonwoven barrier and method of making the same
US5908598A (en) * 1995-08-14 1999-06-01 Minnesota Mining And Manufacturing Company Fibrous webs having enhanced electret properties
US5834384A (en) 1995-11-28 1998-11-10 Kimberly-Clark Worldwide, Inc. Nonwoven webs with one or more surface treatments
US6162535A (en) 1996-05-24 2000-12-19 Kimberly-Clark Worldwide, Inc. Ferroelectric fibers and applications therefor
US6068799A (en) * 1997-10-01 2000-05-30 3M Innovative Properties Company Method of making electret articles and filters with increased oily mist resistance
US6238466B1 (en) 1997-10-01 2001-05-29 3M Innovative Properties Company Electret articles and filters with increased oily mist resistance
US6537932B1 (en) 1997-10-31 2003-03-25 Kimberly-Clark Worldwide, Inc. Sterilization wrap, applications therefor, and method of sterilizing
US6365088B1 (en) 1998-06-26 2002-04-02 Kimberly-Clark Worldwide, Inc. Electret treatment of high loft and low density nonwoven webs
US6759356B1 (en) 1998-06-30 2004-07-06 Kimberly-Clark Worldwide, Inc. Fibrous electret polymeric articles
US6123752A (en) * 1998-09-03 2000-09-26 3M Innovative Properties Company High efficiency synthetic filter medium
US6573205B1 (en) * 1999-01-30 2003-06-03 Kimberly-Clark Worldwide, Inc. Stable electret polymeric articles
US6444312B1 (en) 1999-12-08 2002-09-03 Fiber Innovation Technology, Inc. Splittable multicomponent fibers containing a polyacrylonitrile polymer component
AU2001237000A1 (en) 2000-02-15 2001-08-27 Hollingsworth And Vose Company Melt blown composite hepa filter media and vacuum bag
US6590759B1 (en) * 2000-10-16 2003-07-08 Illinois Tool Works Inc. Device for placing a charge on an object and a method of retrofitting a conveyor for the device
WO2002073673A1 (en) 2001-03-13 2002-09-19 Rochester Institute Of Technology A micro-electro-mechanical switch and a method of using and making thereof
WO2002089956A1 (en) * 2001-05-02 2002-11-14 Hollingsworth & Vose Company Filter media with enhanced stiffness and increased dust holding capacity
US7195393B2 (en) 2001-05-31 2007-03-27 Rochester Institute Of Technology Micro fluidic valves, agitators, and pumps and methods thereof
WO2002100551A1 (en) * 2001-06-11 2002-12-19 Rochester Institute Of Technology An electrostatic filter and a method thereof
US7211923B2 (en) 2001-10-26 2007-05-01 Nth Tech Corporation Rotational motion based, electrostatic power source and methods thereof
US7378775B2 (en) 2001-10-26 2008-05-27 Nth Tech Corporation Motion based, electrostatic power source and methods thereof
US20030203696A1 (en) * 2002-04-30 2003-10-30 Healey David Thomas High efficiency ashrae filter media
US20040040652A1 (en) * 2002-08-30 2004-03-04 3M Innovative Properties Company Methods for electrostatically adhering an article to a substrate
US6805048B2 (en) * 2002-08-30 2004-10-19 3M Innovative Properties Company Method of marking a substrate using an electret stencil
US20040043248A1 (en) * 2002-08-30 2004-03-04 3M Innovative Properties Company Phosphorescent elecret films and methods of making the same
JP2005537358A (ja) * 2002-08-30 2005-12-08 スリーエム イノベイティブ プロパティズ カンパニー 消去可能な物品の製造方法およびその物品
US7217582B2 (en) 2003-08-29 2007-05-15 Rochester Institute Of Technology Method for non-damaging charge injection and a system thereof
US7287328B2 (en) 2003-08-29 2007-10-30 Rochester Institute Of Technology Methods for distributed electrode injection
US8581308B2 (en) 2004-02-19 2013-11-12 Rochester Institute Of Technology High temperature embedded charge devices and methods thereof
US7553440B2 (en) * 2005-05-12 2009-06-30 Leonard William K Method and apparatus for electric treatment of substrates
KR100879279B1 (ko) 2007-02-14 2009-01-16 이상열 고온용 일렉트릿트, 그의 제조방법 및 이를 구비하는마이크로폰
JP5446879B2 (ja) * 2008-02-22 2014-03-19 旭硝子株式会社 エレクトレットおよび静電誘導型変換素子
US8776367B2 (en) * 2008-03-10 2014-07-15 National Taiwan University Method of manufacturing an electret film
JP5267555B2 (ja) * 2008-03-27 2013-08-21 旭硝子株式会社 エレクトレットおよび静電誘導型変換素子
JP5541155B2 (ja) * 2008-03-31 2014-07-09 旭硝子株式会社 加速度センサ装置、無線センサネットワーク及び広域異常振動記録システム
WO2009128503A1 (ja) * 2008-04-17 2009-10-22 旭硝子株式会社 エレクトレットおよび静電誘導型変換素子
TWI462598B (zh) * 2008-08-06 2014-11-21 Univ Nat Taiwan 駐極體薄膜之製造方法及包含該駐極體薄膜之揚聲器
DE102008047552A1 (de) * 2008-09-16 2010-04-08 Carl Freudenberg Kg Elektretfilterelement und Verfahren zu dessen Herstellung
JP5527211B2 (ja) * 2008-09-19 2014-06-18 旭硝子株式会社 エレクトレット、静電誘導型変換素子、及びエレクトレットの製造方法
US20100212272A1 (en) * 2009-02-24 2010-08-26 Hollingsworth & Vose Company Filter media suitable for ashrae applications
JP6200799B2 (ja) * 2012-12-27 2017-09-20 積水化学工業株式会社 エレクトレットシート
EP2938420B1 (de) 2012-12-28 2018-03-07 3M Innovative Properties Company Elektretbahnen mit ladungsverstärkenden zusätzen
ES2638777T3 (es) 2013-04-19 2017-10-24 3M Innovative Properties Company Bandas de electret con aditivos potenciadores de la carga
JP6482814B2 (ja) * 2013-10-15 2019-03-13 株式会社ユポ・コーポレーション フィルター
ES2674802T3 (es) 2014-06-23 2018-07-04 3M Innovative Properties Company Bandas de electret con aditivos potenciadores de la carga
BR112018000412A2 (pt) 2015-07-07 2018-09-11 3M Innovative Properties Co benzotriazol fenóis substituídos
BR112018000381A2 (pt) 2015-07-07 2018-09-11 3M Innovative Properties Company sais de fenolato de benzotriazol substituído e composições antioxidantes formadas a partir dos mesmos
EP3320038A1 (de) 2015-07-07 2018-05-16 3M Innovative Properties Company Polymermatrizen mit ionischen additiven
JP7076718B2 (ja) 2017-01-05 2022-05-30 スリーエム イノベイティブ プロパティズ カンパニー 帯電強化添加剤を含むエレクトレットウェブ
CN114555691B (zh) 2019-10-16 2023-11-28 3M创新有限公司 取代的苯并咪唑熔体添加剂
EP4045167A1 (de) 2019-10-16 2022-08-24 3M Innovative Properties Company Schmelzzusätze mit zweifachfunktion
EP4069898B1 (de) 2019-12-03 2023-06-21 3M Innovative Properties Company Thiolatsalzschmelzadditive
WO2021111290A1 (en) 2019-12-03 2021-06-10 3M Innovative Properties Company Aromatic-heterocyclic ring melt additives
CN115427622B (zh) 2020-01-27 2023-09-15 3M创新有限公司 取代的硫醇盐熔体添加剂
US11982031B2 (en) 2020-01-27 2024-05-14 3M Innovative Properties Company Substituted thiol melt additives
CN111710778B (zh) * 2020-07-27 2022-03-22 西安交通大学 一种可拉伸的磁电驻极体及其制备方法
CN112127144A (zh) * 2020-09-22 2020-12-25 武汉海派特塑料机械有限公司 用于熔喷布的静电驻极加载装置
CN116252502B (zh) * 2023-03-13 2023-10-27 天津大学 一种基于界面沉积改性的聚丙烯薄膜介电性能提升方法

Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0246811A2 (de) * 1986-05-19 1987-11-25 Btg International Limited Filtermaterial aus Mischfasern
JPH01148320A (ja) * 1987-12-02 1989-06-09 Toyobo Co Ltd エレクトレットフィルターの製造方法
WO1989011156A1 (en) * 1988-05-13 1989-11-16 Toray Industries, Inc. Electret material and process for preparing electret material

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GB1337753A (en) * 1971-01-21 1973-11-21 Thermo Electron Corp Electrets
JPS5650408B2 (de) * 1973-07-05 1981-11-28
NL181632C (nl) * 1976-12-23 1987-10-01 Minnesota Mining & Mfg Electreetfilter en werkwijze voor het vervaardigen daarvan.
JPS5925612B2 (ja) * 1979-07-09 1984-06-19 新田ベルト株式会社 エレクトレツトフイルタ−
NL7907539A (nl) * 1979-10-11 1981-04-14 Tno Werkwijze voor het vervaardigen van elektreten.
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DE3509857C2 (de) * 1984-03-19 1994-04-28 Toyo Boseki Elektretisiertes Staubfilter und dessen Herstellung
JPS60225416A (ja) * 1984-04-24 1985-11-09 三井化学株式会社 高性能エレクトレツトおよびエアフイルタ−
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Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0246811A2 (de) * 1986-05-19 1987-11-25 Btg International Limited Filtermaterial aus Mischfasern
JPH01148320A (ja) * 1987-12-02 1989-06-09 Toyobo Co Ltd エレクトレットフィルターの製造方法
WO1989011156A1 (en) * 1988-05-13 1989-11-16 Toray Industries, Inc. Electret material and process for preparing electret material

Also Published As

Publication number Publication date
US5256176A (en) 1993-10-26
DE69119948T2 (de) 1996-10-24
ATE139054T1 (de) 1996-06-15
DE69119948D1 (de) 1996-07-11
EP0447166B1 (de) 1996-06-05
EP0447166A2 (de) 1991-09-18
CA2037942A1 (en) 1991-09-13
EP0447166A3 (en) 1992-10-21
HK14197A (en) 1997-02-14

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