CA2227422A1 - Fibrous webs having enhanced electret properties - Google Patents

Fibrous webs having enhanced electret properties Download PDF

Info

Publication number
CA2227422A1
CA2227422A1 CA002227422A CA2227422A CA2227422A1 CA 2227422 A1 CA2227422 A1 CA 2227422A1 CA 002227422 A CA002227422 A CA 002227422A CA 2227422 A CA2227422 A CA 2227422A CA 2227422 A1 CA2227422 A1 CA 2227422A1
Authority
CA
Canada
Prior art keywords
web
thermoplastic resin
compound
group
pentene
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.)
Abandoned
Application number
CA002227422A
Other languages
English (en)
French (fr)
Inventor
Alan D. Rousseau
Marvin E. Jones
Seyed A. Angadjivand
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.)
3M Co
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 CA2227422A1 publication Critical patent/CA2227422A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • 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
    • 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
    • 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
    • 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
    • B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, e.g. by ultrasonic waves, corona discharge, irradiation, electric currents or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • 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
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • B01D2239/0225—Side-by-side
    • 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
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • B01D2239/0233—Island-in-sea
    • 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
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0613—Woven
    • 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
    • B01D2239/0636—Two or more types of fibres present in the filter 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
    • B01D2239/06—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
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0663—The layers being joined by hydro-entangling
    • 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
    • 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
    • B01D2239/1233—Fibre diameter
    • 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
    • B01D2239/1291—Other parameters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/16—Controlling the light source by timing means
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24826—Spot bonds connect components
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2418—Coating or impregnation increases electrical conductivity or anti-static quality

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Filtering Materials (AREA)
  • Electrostatic Separation (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
CA002227422A 1995-08-14 1996-07-18 Fibrous webs having enhanced electret properties Abandoned CA2227422A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/514,866 1995-08-14
US08/514,866 US5908598A (en) 1995-08-14 1995-08-14 Fibrous webs having enhanced electret properties

Publications (1)

Publication Number Publication Date
CA2227422A1 true CA2227422A1 (en) 1997-02-27

Family

ID=24048997

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002227422A Abandoned CA2227422A1 (en) 1995-08-14 1996-07-18 Fibrous webs having enhanced electret properties

Country Status (12)

Country Link
US (6) US5908598A (enExample)
EP (1) EP0845058B1 (enExample)
JP (1) JP4069195B2 (enExample)
KR (1) KR100405072B1 (enExample)
CN (1) CN1188559C (enExample)
AU (1) AU700461B2 (enExample)
BR (1) BR9610200A (enExample)
CA (1) CA2227422A1 (enExample)
DE (1) DE69627670T2 (enExample)
ES (1) ES2195001T3 (enExample)
MX (1) MX9800828A (enExample)
WO (1) WO1997007272A1 (enExample)

Families Citing this family (242)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6162535A (en) 1996-05-24 2000-12-19 Kimberly-Clark Worldwide, Inc. Ferroelectric fibers and applications therefor
US6041782A (en) * 1997-06-24 2000-03-28 3M Innovative Properties Company Respiratory mask having comfortable inner cover web
US6238466B1 (en) * 1997-10-01 2001-05-29 3M Innovative Properties Company Electret articles and filters with increased oily mist resistance
US6213122B1 (en) * 1997-10-01 2001-04-10 3M Innovative Properties Company Electret fibers and filter webs having a low level of extractable hydrocarbons
AU755573B2 (en) * 1997-10-01 2002-12-19 Minnesota Mining And Manufacturing Company Electret fibers and filter webs having a low level of extractable hydrocarbons
US6068799A (en) * 1997-10-01 2000-05-30 3M Innovative Properties Company Method of making electret articles and filters with increased oily mist resistance
US6062221A (en) 1997-10-03 2000-05-16 3M Innovative Properties Company Drop-down face mask assembly
US6732733B1 (en) 1997-10-03 2004-05-11 3M Innovative Properties Company Half-mask respirator with head harness assembly
US6759356B1 (en) 1998-06-30 2004-07-06 Kimberly-Clark Worldwide, Inc. Fibrous electret polymeric articles
WO2000000267A2 (en) * 1998-06-30 2000-01-06 Kimberly-Clark Worldwide, Inc. Stable polymeric electret materials
US6432175B1 (en) 1998-07-02 2002-08-13 3M Innovative Properties Company Fluorinated electret
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
US6630231B2 (en) 1999-02-05 2003-10-07 3M Innovative Properties Company Composite articles reinforced with highly oriented microfibers
US6110588A (en) 1999-02-05 2000-08-29 3M Innovative Properties Company Microfibers and method of making
US7049379B2 (en) 1999-05-11 2006-05-23 3M Innovative Properties Company Alkylated fluorochemical oligomers and use thereof in the treatment of fibrous substrates
US6525127B1 (en) 1999-05-11 2003-02-25 3M Innovative Properties Company Alkylated fluorochemical oligomers and use thereof in the treatment of fibrous substrates
US6288157B1 (en) * 1999-05-11 2001-09-11 3M Innovative Properties Company Alkylated fluorochemical oligomers and use thereof
US6627563B1 (en) 1999-08-19 2003-09-30 3M Innovative Properties Company Oily-mist resistant filter that has nondecreasing efficiency
US6174964B1 (en) 1999-09-24 2001-01-16 3M Innovative Properties Company Fluorochemical oligomer and use thereof
US6375886B1 (en) * 1999-10-08 2002-04-23 3M Innovative Properties Company Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid
US6454986B1 (en) 1999-10-08 2002-09-24 3M Innovative Properties Company Method of making a fibrous electret web using a nonaqueous polar liquid
US6406657B1 (en) * 1999-10-08 2002-06-18 3M Innovative Properties Company Method and apparatus for making a fibrous electret web using a wetting liquid and an aqueous polar liquid
US6729332B1 (en) 1999-10-22 2004-05-04 3M Innovative Properties Company Retention assembly with compression element and method of use
US6444312B1 (en) 1999-12-08 2002-09-03 Fiber Innovation Technology, Inc. Splittable multicomponent fibers containing a polyacrylonitrile polymer component
US6391948B1 (en) 1999-12-14 2002-05-21 3M Innovative Properties Company Triazine compounds and use thereof
US6494921B1 (en) 2000-02-10 2002-12-17 M. Catherine Bennett Method of removing particulate debris, especially dust mite fecal material from fabric articles in a conventional clothes dryer
US6743464B1 (en) * 2000-04-13 2004-06-01 3M Innovative Properties Company Method of making electrets through vapor condensation
US6419871B1 (en) * 2000-05-25 2002-07-16 Transweb, Llc. Plasma treatment of filter media
US6468451B1 (en) 2000-06-23 2002-10-22 3M Innovative Properties Company Method of making a fibrillated article
US6800117B2 (en) * 2000-09-05 2004-10-05 Donaldson Company, Inc. Filtration arrangement utilizing pleated construction and method
CN101117736A (zh) * 2000-09-05 2008-02-06 唐纳森公司 聚合物,聚合物微米纤维,聚合物纳米纤维和包括过滤器结构的用途
US6740142B2 (en) 2000-09-05 2004-05-25 Donaldson Company, Inc. Industrial bag house elements
US7115150B2 (en) * 2000-09-05 2006-10-03 Donaldson Company, Inc. Mist filtration arrangement utilizing fine fiber layer in contact with media having a pleated construction and floor filter method
US6673136B2 (en) * 2000-09-05 2004-01-06 Donaldson Company, Inc. Air filtration arrangements having fluted media constructions and methods
US6716274B2 (en) 2000-09-05 2004-04-06 Donaldson Company, Inc. Air filter assembly for filtering an air stream to remove particulate matter entrained in the stream
US6743273B2 (en) * 2000-09-05 2004-06-01 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US6746517B2 (en) * 2000-09-05 2004-06-08 Donaldson Company, Inc. Filter structure with two or more layers of fine fiber having extended useful service life
US7270693B2 (en) * 2000-09-05 2007-09-18 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US20020092423A1 (en) * 2000-09-05 2002-07-18 Gillingham Gary R. Methods for filtering air for a gas turbine system
JP4581213B2 (ja) * 2000-10-11 2010-11-17 東レ株式会社 エレクトレット加工品の製造方法
JP4581212B2 (ja) * 2000-10-11 2010-11-17 東レ株式会社 エレクトレット加工品の製造方法
JP2002161471A (ja) * 2000-11-28 2002-06-04 Toray Ind Inc エレクトレット加工品の製造方法
JP4670144B2 (ja) * 2000-12-04 2011-04-13 東レ株式会社 エレクトレット加工品の製造方法
JP4670143B2 (ja) * 2000-12-04 2011-04-13 東レ株式会社 エレクトレット加工品の製造方法
US6420024B1 (en) * 2000-12-21 2002-07-16 3M Innovative Properties Company Charged microfibers, microfibrillated articles and use thereof
JP4747255B2 (ja) * 2000-12-27 2011-08-17 Ｊｎｃ株式会社 帯電性を有するトウおよびそれを用いた積層体
US6802315B2 (en) * 2001-03-21 2004-10-12 Hollingsorth & Vose Company Vapor deposition treated electret filter media
JP4686896B2 (ja) * 2001-05-11 2011-05-25 東レ株式会社 エレクトレット加工品の製造方法
US6680114B2 (en) 2001-05-15 2004-01-20 3M Innovative Properties Company Fibrous films and articles from microlayer substrates
RU2300543C2 (ru) * 2001-05-31 2007-06-10 Дональдсон Компани, Инк. Составы тонкого волокна, способы их получения, способ изготовления тонковолокнистого материала
US6969484B2 (en) 2001-06-18 2005-11-29 Toray Industries, Inc. Manufacturing method and device for electret processed product
US6514324B1 (en) * 2001-08-10 2003-02-04 Rick L. Chapman High efficiency active electrostatic air filter and method of manufacture
US20030054716A1 (en) * 2001-09-07 2003-03-20 3M Innovative Properties Company Method of making an electret
US7887889B2 (en) * 2001-12-14 2011-02-15 3M Innovative Properties Company Plasma fluorination treatment of porous materials
US6692823B2 (en) 2001-12-19 2004-02-17 3M Innovative Properties Company Microfibrillated articles comprising hydrophillic component
WO2003060216A1 (en) * 2002-01-11 2003-07-24 Japan Vilene Company, Ltd. Process for producing electret and production apparatus
US6753080B1 (en) 2002-01-29 2004-06-22 3M Innovative Properties Company Receptor medium having a microfibrillated surface
US6923182B2 (en) 2002-07-18 2005-08-02 3M Innovative Properties Company Crush resistant filtering face mask
US6827764B2 (en) * 2002-07-25 2004-12-07 3M Innovative Properties Company Molded filter element that contains thermally bonded staple fibers and electrically-charged microfibers
EP1540678A2 (en) 2002-08-30 2005-06-15 3M Innovative Properties Company Method of making writable erasable articles and articles therefrom
US6805048B2 (en) 2002-08-30 2004-10-19 3M Innovative Properties Company Method of marking a substrate using an electret stencil
ATE554842T1 (de) * 2002-09-16 2012-05-15 Triomed Innovations Corp Elektrostatisch geladenes filtermedium mit eingearbeitetem wirkstoff
US20040121681A1 (en) * 2002-12-23 2004-06-24 Kimberly-Clark Worldwide, Inc. Absorbent articles containing an activated carbon substrate
US20040122387A1 (en) * 2002-12-23 2004-06-24 Kimberly-Clark Worldwide, Inc. Absorbent articles that include a stretchable substrate having odor control properties
US20040121688A1 (en) * 2002-12-23 2004-06-24 Kimberly-Clark Worldwide, Inc. Flexible activated carbon substrates
US20040194784A1 (en) * 2003-04-01 2004-10-07 Archie Bertrand Respiratory particulate filter
US20050000642A1 (en) * 2003-07-03 2005-01-06 3M Innovative Properties Company Cling articles
US20050217226A1 (en) * 2004-04-05 2005-10-06 3M Innovative Properties Company Pleated aligned web filter
US6858297B1 (en) 2004-04-05 2005-02-22 3M Innovative Properties Company Aligned fiber web
WO2006096486A2 (en) 2005-03-07 2006-09-14 3M Innovative Properties Company Vehicle passenger compartment air filter devices
US7244291B2 (en) * 2005-05-02 2007-07-17 3M Innovative Properties Company Electret article having high fluorosaturation ratio
US7244292B2 (en) * 2005-05-02 2007-07-17 3M Innovative Properties Company Electret article having heteroatoms and low fluorosaturation ratio
US20070048358A1 (en) * 2005-08-31 2007-03-01 Schorr Phillip A Antimicrobial substrates
US20070048356A1 (en) * 2005-08-31 2007-03-01 Schorr Phillip A Antimicrobial treatment of nonwoven materials for infection control
US20070048344A1 (en) * 2005-08-31 2007-03-01 Ali Yahiaoui Antimicrobial composition
US7691168B2 (en) * 2005-10-19 2010-04-06 3M Innovative Properties Company Highly charged, charge stable nanofiber web
US7503326B2 (en) * 2005-12-22 2009-03-17 3M Innovative Properties Company Filtering face mask with a unidirectional valve having a stiff unbiased flexible flap
JPWO2007080801A1 (ja) * 2006-01-11 2009-06-11 出光興産株式会社 新規イミド誘導体、有機エレクトロルミネッセンス素子用材料及びそれを用いた有機エレクトロルミネッセンス素子
US7390351B2 (en) * 2006-02-09 2008-06-24 3M Innovative Properties Company Electrets and compounds useful in electrets
EP2044251B1 (en) 2006-07-14 2019-10-02 NatureWorks LLC Biodegradable aliphatic polyester for use in nonwoven webs
US7902096B2 (en) * 2006-07-31 2011-03-08 3M Innovative Properties Company Monocomponent monolayer meltblown web and meltblowing apparatus
US9770058B2 (en) 2006-07-17 2017-09-26 3M Innovative Properties Company Flat-fold respirator with monocomponent filtration/stiffening monolayer
US7807591B2 (en) * 2006-07-31 2010-10-05 3M Innovative Properties Company Fibrous web comprising microfibers dispersed among bonded meltspun fibers
US7858163B2 (en) * 2006-07-31 2010-12-28 3M Innovative Properties Company Molded monocomponent monolayer respirator with bimodal monolayer monocomponent media
US7905973B2 (en) * 2006-07-31 2011-03-15 3M Innovative Properties Company Molded monocomponent monolayer respirator
US7754041B2 (en) * 2006-07-31 2010-07-13 3M Innovative Properties Company Pleated filter with bimodal monolayer monocomponent media
US8029723B2 (en) * 2006-07-31 2011-10-04 3M Innovative Properties Company Method for making shaped filtration articles
US7947142B2 (en) * 2006-07-31 2011-05-24 3M Innovative Properties Company Pleated filter with monolayer monocomponent meltspun media
WO2008072554A1 (ja) * 2006-12-14 2008-06-19 Toray Industries, Inc. エレクトレット繊維シート
JP2008221074A (ja) * 2007-03-09 2008-09-25 Toyobo Co Ltd エレクトレット濾材およびその製造方法
US7628829B2 (en) * 2007-03-20 2009-12-08 3M Innovative Properties Company Abrasive article and method of making and using the same
US20080233850A1 (en) * 2007-03-20 2008-09-25 3M Innovative Properties Company Abrasive article and method of making and using the same
US20080271740A1 (en) 2007-05-03 2008-11-06 3M Innovative Properties Company Maintenance-free flat-fold respirator that includes a graspable tab
US20080271739A1 (en) 2007-05-03 2008-11-06 3M Innovative Properties Company Maintenance-free respirator that has concave portions on opposing sides of mask top section
US9770611B2 (en) 2007-05-03 2017-09-26 3M Innovative Properties Company Maintenance-free anti-fog respirator
US7989372B2 (en) * 2007-06-22 2011-08-02 3M Innovative Properties Company Molded respirator comprising meltblown fiber web with staple fibers
US20080315454A1 (en) * 2007-06-22 2008-12-25 3M Innovative Properties Company Method of making meltblown fiber web with staple fibers
US7989371B2 (en) * 2007-06-22 2011-08-02 3M Innovative Properties Company Meltblown fiber web with staple fibers
US20090000624A1 (en) * 2007-06-28 2009-01-01 3M Innovative Properties Company Respirator having a harness and methods of making and fitting the same
US8070862B2 (en) * 2007-09-04 2011-12-06 3M Innovative Properties Company Dust collection device for sanding tool
AU2008302589B2 (en) 2007-09-20 2011-01-27 3M Innovative Properties Company Filtering face-piece respirator that has expandable mask body
ES2401944T3 (es) * 2007-12-06 2013-04-25 3M Innovative Properties Company Bandas de electreto con aditivos mejoradores de la carga eléctrica
WO2009086339A2 (en) * 2007-12-27 2009-07-09 3M Innovative Properties Company Dust collection device for sanding tool
WO2009089283A2 (en) * 2008-01-07 2009-07-16 The Johns Hopkins University Low-voltage, n-channel hybrid transistors
US20090249957A1 (en) * 2008-04-04 2009-10-08 Lackey Sr Robert W Two Stage Air Filter
US20110137082A1 (en) * 2008-06-02 2011-06-09 Li Fuming B Charge-enhancing additives for electrets
US7765698B2 (en) * 2008-06-02 2010-08-03 3M Innovative Properties Company Method of making electret articles based on zeta potential
JP5676433B2 (ja) * 2008-06-02 2015-02-25 スリーエム イノベイティブ プロパティズ カンパニー 帯電促進添加剤を備えたエレクトレットウェブ
EP2303770B1 (en) * 2008-06-30 2014-07-09 3M Innovative Properties Company Method for in situ formation of metal nanoclusters within a porous substrate
US8269215B2 (en) * 2008-07-21 2012-09-18 The Johns Hopkins University Pyromellitic diimide organic semiconductors and devices
EP2159222A1 (de) 2008-08-27 2010-03-03 Bayer MaterialScience AG Additive zur Verbesserung des Elektretverhaltens von Polycarbonaten
DE102008047552A1 (de) 2008-09-16 2010-04-08 Carl Freudenberg Kg Elektretfilterelement und Verfahren zu dessen Herstellung
CN102159649B (zh) * 2008-09-19 2014-04-16 旭硝子株式会社 驻极体及静电感应型转换元件
CA2742044C (en) 2008-10-31 2016-11-29 Cytec Technology Corp. Process for enhancing electrostatic separation in the beneficiation of ores
US11083916B2 (en) 2008-12-18 2021-08-10 3M Innovative Properties Company Flat fold respirator having flanges disposed on the mask body
US8382872B2 (en) 2008-12-23 2013-02-26 3M Innovative Properties Company Dust collection device for sanding tool
CN102348845A (zh) * 2009-02-20 2012-02-08 3M创新有限公司 抗微生物驻极体网
RU2475575C1 (ru) * 2009-04-03 2013-02-20 3М Инновейтив Пропертиз Компани Технологические добавки для олефиновых полотен, в частности электретных полотен
US20100252047A1 (en) * 2009-04-03 2010-10-07 Kirk Seth M Remote fluorination of fibrous filter webs
KR101669306B1 (ko) 2009-04-03 2016-10-25 쓰리엠 이노베이티브 프로퍼티즈 컴파니 전하 증대 첨가제를 갖는 일렉트릿 웨브
ITPD20090117A1 (it) * 2009-05-04 2010-11-05 Euroflex Srl Spruzzatore a mano per liquidi detergenti
US8640704B2 (en) 2009-09-18 2014-02-04 3M Innovative Properties Company Flat-fold filtering face-piece respirator having structural weld pattern
US8881729B2 (en) 2009-09-18 2014-11-11 3M Innovative Properties Company Horizontal flat-fold filtering face-piece respirator having indicia of symmetry
EP2298096A2 (en) 2009-09-18 2011-03-23 3M Innovative Properties Co. Filtering face respirator having grasping feature indicator
TW201121786A (en) * 2009-10-22 2011-07-01 Chi Lin Technology Co Ltd Hybrid electret
US8528560B2 (en) 2009-10-23 2013-09-10 3M Innovative Properties Company Filtering face-piece respirator having parallel line weld pattern in mask body
USD676527S1 (en) 2009-12-16 2013-02-19 3M Innovative Properties Company Unidirectional valve
US8365771B2 (en) 2009-12-16 2013-02-05 3M Innovative Properties Company Unidirectional valves and filtering face masks comprising unidirectional valves
BR112012016094A2 (pt) 2009-12-30 2016-08-16 3M Innovative Properties Co respirador com peça facial filtrante tendo uma malha auxética no corpo da máscara
CN105709501B (zh) 2010-02-12 2019-01-08 唐纳森公司 液体过滤介质
US9126135B2 (en) 2010-06-22 2015-09-08 Clarcor Air Filtration Products, Inc. V-bank air filtration system such as for animal confinement
RU2543889C2 (ru) 2010-06-22 2015-03-10 Кларкор Эр Филтрейшн Продактс, Инк. Система фильтрации воздуха в сооружениях для стойлового содержания животных с помощью панельного воздушного фильтра с зигзагообразным расположением панелей
US20120017911A1 (en) 2010-07-26 2012-01-26 3M Innovative Properties Company Filtering face-piece respirator having foam shaping layer
US10753023B2 (en) 2010-08-13 2020-08-25 Kimberly-Clark Worldwide, Inc. Toughened polylactic acid fibers
US8936740B2 (en) 2010-08-13 2015-01-20 Kimberly-Clark Worldwide, Inc. Modified polylactic acid fibers
DK2609238T3 (en) 2010-08-23 2017-03-13 Fiberweb Holdings Ltd WOVEN COAT AND FIBER WITH ELECTRICAL CHARACTERISTICS, PROCEDURES FOR MANUFACTURING THERE AND THEIR USE
US20120125341A1 (en) 2010-11-19 2012-05-24 3M Innovative Properties Company Filtering face-piece respirator having an overmolded face seal
US9185877B2 (en) 2011-05-27 2015-11-17 Clarcor Air Filtration Products, Inc. Collapsible and/or assembled filter housing and filter used therewith
US9687766B2 (en) 2011-05-27 2017-06-27 Clarcor Air Filtration Products, Inc. Collapsible and/or assembled filter housing and filter used therewith
US9802187B2 (en) 2011-06-30 2017-10-31 3M Innovative Properties Company Non-woven electret fibrous webs and methods of making same
KR102178689B1 (ko) 2011-08-12 2020-11-13 도널드선 컴파니 인코포레이티드 멜트-블로운 섬유를 포함하는 액체 여과 매질
US8975305B2 (en) 2012-02-10 2015-03-10 Kimberly-Clark Worldwide, Inc. Rigid renewable polyester compositions having a high impact strength and tensile elongation
US9034068B2 (en) 2012-06-05 2015-05-19 Clarcor Air Filtration Products, Inc. Box filter with orientation device
CN103046231A (zh) * 2012-06-22 2013-04-17 浙江朝晖过滤技术股份有限公司 熔纺非织造材料及其生产方法及其应用
US11116998B2 (en) 2012-12-27 2021-09-14 3M Innovative Properties Company Filtering face-piece respirator having folded flange
US10182603B2 (en) 2012-12-27 2019-01-22 3M Innovative Properties Company Filtering face-piece respirator having strap-activated folded flange
ES2669768T3 (es) 2012-12-28 2018-05-29 3M Innovative Properties Company Bandas de electret con aditivos potenciadores de la carga
US9259058B2 (en) 2013-02-01 2016-02-16 3M Innovative Properties Company Personal protective equipment strap retaining devices
US9247788B2 (en) 2013-02-01 2016-02-02 3M Innovative Properties Company Personal protective equipment strap retaining devices
AU2014254114B2 (en) 2013-04-19 2016-04-07 3M Innovative Properties Company Electret webs with charge-enhancing additives
JP2014233687A (ja) * 2013-06-04 2014-12-15 東洋紡株式会社 エレクトレットフィルター
EP3071164B1 (en) 2013-11-20 2021-09-29 Kimberly-Clark Worldwide, Inc. Absorbent article containing a soft and durable backsheet
BR112016011370B1 (pt) 2013-11-20 2022-02-08 Kimberly-Clark Worldwide, Inc Compósito não tecido, laminado em multicamadas, e artigo absorvente
JP6542787B2 (ja) 2013-11-26 2019-07-10 スリーエム イノベイティブ プロパティズ カンパニー 寸法安定性メルトブローン不織布繊維構造とその製造方法及び製造装置
WO2015094652A1 (en) 2013-12-17 2015-06-25 3M Innovative Properties Company Air quality indicator
JP2017512263A (ja) 2014-02-27 2017-05-18 スリーエム イノベイティブ プロパティズ カンパニー 透かし細工構造を有する弾性ストラップを備えた呼吸マスク
KR20160127058A (ko) 2014-02-28 2016-11-02 쓰리엠 이노베이티브 프로퍼티즈 컴파니 리본 및 스트랜드의 중합체 네팅을 포함하는 여과 매체
US10040621B2 (en) 2014-03-20 2018-08-07 3M Innovative Properties Company Filtering face-piece respirator dispenser
PL3157650T3 (pl) 2014-06-23 2018-08-31 3M Innovative Properties Co Wstęgi elektretowe z dodatkami zwiększającymi ładunek
SG11201701257PA (en) 2014-08-18 2017-03-30 3M Innovative Properties Co Respirator including polymeric netting and method of forming same
US10273612B2 (en) 2014-08-26 2019-04-30 3M Innovative Properties Company Spunbonded web comprising polylactic acid fibers
CA2960497C (en) 2014-09-08 2023-10-10 Clarcor Air Filtration Products, Inc. Filter with high dust capacity
BR112017008761A2 (pt) 2014-10-31 2017-12-19 3M Innovative Properties Co respirador que tem estrutura filtrante corrugada
US11083816B2 (en) 2014-11-18 2021-08-10 Kimberly-Clark Worldwide, Inc. Soft and durable nonwoven web
GB201421617D0 (en) 2014-12-04 2015-01-21 3M Innovative Properties Co Respirator tab
KR102466690B1 (ko) * 2015-03-16 2022-11-14 도레이 카부시키가이샤 일렉트릿 섬유 시트
JP2016169459A (ja) * 2015-03-16 2016-09-23 東レ株式会社 エレクトレット繊維シート
GB201508114D0 (en) 2015-05-12 2015-06-24 3M Innovative Properties Co Respirator tab
BR112018000377A2 (pt) 2015-07-07 2018-09-11 3M Innovative Properties Co matrizes poliméricas com aditivos iônicos
WO2017007675A1 (en) 2015-07-07 2017-01-12 3M Innovative Properties Company Electret webs with charge-enhancing additives
WO2017007672A1 (en) 2015-07-07 2017-01-12 3M Innovative Properties Company Substituted benzotriazole phenols
JP6905970B2 (ja) 2015-07-07 2021-07-21 スリーエム イノベイティブ プロパティズ カンパニー 置換ベンゾトリアゾールフェノレート塩及びそれから形成される抗酸化剤組成物
RU2015141569A (ru) 2015-09-30 2017-04-05 3М Инновейтив Пропертиз Компани Складной респиратор с лицевой маской и клапаном выдоха
WO2017066284A1 (en) 2015-10-12 2017-04-20 3M Innovative Properties Company Filtering face-piece respirator including functional material and method of forming same
US10286349B2 (en) 2015-11-10 2019-05-14 3M Innovative Properties Company Air filter use indicators
BR112018009661A2 (pt) 2015-11-11 2018-11-13 3M Innovative Properties Co respirador de dobra plana com retenção de formato
EP3396058A4 (en) * 2015-12-22 2019-08-28 Toray Industries, Inc. ELEKTRETFASERFOLIE
US12420221B2 (en) 2016-07-01 2025-09-23 Hollingsworth & Vose Company Multi-layered electret-containing filtration media
MX2019002849A (es) 2016-09-16 2019-07-08 3M Innovative Properties Co Valvula de exhalacion y respirador que incluye la misma.
CA3042025A1 (en) 2016-10-28 2018-05-03 3M Innovative Properties Company Respirator including reinforcing element
CN110072603B (zh) * 2016-12-26 2021-08-27 松下知识产权经营株式会社 空气过滤器滤材
KR20190101399A (ko) 2017-01-05 2019-08-30 쓰리엠 이노베이티브 프로퍼티즈 캄파니 전하 증대 첨가제를 갖는 일렉트릿 웨브
US10814261B2 (en) 2017-02-21 2020-10-27 Hollingsworth & Vose Company Electret-containing filter media
US11077394B2 (en) 2017-02-21 2021-08-03 Hollingsworth & Vose Company Electret-containing filter media
RU2671037C2 (ru) 2017-03-17 2018-10-29 3М Инновейтив Пропертиз Компани Складной респиратор с лицевой маской типа ffp3
CN107090661A (zh) * 2017-05-22 2017-08-25 海安国洋机械科技有限公司 自喷式金属纤维牵切铺毡机
US11028252B2 (en) * 2017-06-13 2021-06-08 3M Innovative Properties Company Melt additive compounds, methods of using the same, and articles and compositions including the same
EP3645776B1 (en) 2017-06-29 2021-08-25 3M Innovative Properties Company Nonwoven article and method of making the same
EP3646069A1 (en) 2017-06-29 2020-05-06 3M Innovative Properties Company Article and methods of making the same
JP7186213B2 (ja) 2017-07-14 2022-12-08 スリーエム イノベイティブ プロパティズ カンパニー 複数の液体ストリームを搬送するためのアダプタ
CN108251906A (zh) * 2017-10-20 2018-07-06 深圳市美沃布朗科技有限公司 一种高效低阻防霾透气窗纱及其制备方法
JP2021509449A (ja) 2017-12-28 2021-03-25 スリーエム イノベイティブ プロパティズ カンパニー 難燃性ポリマーを含むセラミックコーティングされた繊維、及び不織布構造の製造方法
US12150502B2 (en) 2018-01-03 2024-11-26 3M Innovative Properties Company Respirator including transversely-extending pleat and method of forming same
CN112218981A (zh) * 2018-05-17 2021-01-12 田纳西大学研究基金会 使无纺织物由液体饱和的方法及其驻极体的制造方法
MX2021013375A (es) 2019-05-01 2021-11-25 Ascend Performance Mat Operations Llc Medios de filtro que comprenden una capa de nanofibra de poliamida.
US12000071B2 (en) 2019-06-26 2024-06-04 Solventum Intellectual Properties Company Method of making a nonwoven fiber web, nonwoven fiber web, and multi-component fiber
CN114173904A (zh) 2019-06-28 2022-03-11 3M创新有限公司 过滤器组件、预过滤器组件和包括它们的呼吸器
WO2020261150A1 (en) 2019-06-28 2020-12-30 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and respirator including the same
EP4045166B1 (en) 2019-10-16 2023-11-29 3M Innovative Properties Company Substituted benzimidazole melt additives
CN114555877A (zh) 2019-10-16 2022-05-27 3M创新有限公司 双功能熔体添加剂
CN110812947B (zh) * 2019-10-18 2022-02-08 东莞市亿茂滤材有限公司 具有空腔结构的驻极体非织造过滤材料及其制备方法
CN110833932A (zh) * 2019-11-06 2020-02-25 浙江金海环境技术股份有限公司 驻极体材料的制备方法、制备装置和驻极体材料
US20220401862A1 (en) 2019-12-03 2022-12-22 3M Innovative Properties Company Aromatic-heterocyclic ring melt additives
EP4069898B1 (en) 2019-12-03 2023-06-21 3M Innovative Properties Company Thiolate salt melt additives
EP4097284B1 (en) 2020-01-27 2024-05-29 3M Innovative Properties Company Substituted thiolate salt melt additives
EP4097285B1 (en) 2020-01-27 2024-06-26 3M Innovative Properties Company Substituted thiol melt additives
US11992585B2 (en) 2020-03-13 2024-05-28 Julian HENLEY Electro-ionic devices for improved protection from airborne biopathogens
US12017232B2 (en) 2020-03-13 2024-06-25 Julian HENLEY Electro-ionic mask devices for improved protection from airborne biopathogens
DE102020107746A1 (de) 2020-03-20 2021-09-23 Solvamed Gmbh Verbesserte Atemschutzmaske
KR102228591B1 (ko) 2020-03-26 2021-03-16 도레이첨단소재 주식회사 복합 부직포 및 이를 포함하는 물품
JP7523572B2 (ja) 2020-04-09 2024-07-26 トーレ・アドバンスド・マテリアルズ・コリア・インコーポレーテッド 複合不織布、及びそれを含む物品
EP3915650A1 (de) 2020-05-28 2021-12-01 Eurofilters Holding N.V. Atemschutzmaske
EP3915647A1 (de) 2020-05-28 2021-12-01 Eurofilters Holding N.V. Atemschutzmaske
DE202020103076U1 (de) 2020-05-28 2021-09-01 Eurofilters Holding N.V. Atemschutzmaske
EP3915648A1 (de) 2020-05-28 2021-12-01 Eurofilters Holding N.V. Atemschutzmaske
EP3915649A1 (de) 2020-05-28 2021-12-01 Eurofilters Holding N.V. Atemschutzmaske
DE202020103075U1 (de) 2020-05-28 2021-09-01 Eurofilters Holding N.V. Atemschutzmaske
DE202020103077U1 (de) 2020-05-28 2021-09-01 Eurofilters Holding N.V. Atemschutzmaske
DE202020103073U1 (de) 2020-05-28 2021-09-01 Eurofilters Holding N.V. Atemschutzmaske
WO2022009028A1 (en) 2020-07-08 2022-01-13 3M Innovative Properties Company Pleated filtration assembly comprising spunbonded prefilter
CN116348190A (zh) 2020-08-11 2023-06-27 3M创新有限公司 具有羧酸或羧酸盐电荷增强添加剂的驻极体料片
US20230285884A1 (en) 2020-08-11 2023-09-14 3M Innovative Properties Company Electret webs with benzoate salt charge-enhancing additives
EP3954438A1 (de) 2020-08-12 2022-02-16 Eurofilters Holding N.V. Verfahren zur herstellung einer atemschutzmaske
GB2601467A (en) * 2020-08-21 2022-06-08 Alchemie Tech Limited Improvements in or relating to filters
US20230390678A1 (en) 2020-11-02 2023-12-07 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and filtering articles including the same
US20230398478A1 (en) 2020-11-10 2023-12-14 Neenah Gessner Gmbh Filter medium comprising a nonwoven electret
WO2022130080A1 (en) 2020-12-18 2022-06-23 3M Innovative Properties Company Electrets comprising a substituted cyclotriphosphazene compound and articles therefrom
WO2023031697A1 (en) 2021-09-01 2023-03-09 3M Innovative Properties Company Anti-virus respirator and mask
CN116785834A (zh) * 2022-03-18 2023-09-22 大金工业株式会社 驻极体材料、过滤器以及母料
WO2024039921A1 (en) 2022-08-17 2024-02-22 Integrated Pharma Services, Llc Pleating spacers and their use to provide improved facial masks and respirators
US20240115889A1 (en) 2022-10-07 2024-04-11 3M Innovative Properties Company Disposable, Flat-Fold Respirator Having Increased Stiffness in Selected Areas
WO2024137158A1 (en) 2022-12-21 2024-06-27 3M Innovative Properties Company Shirred filter media and methods of making and using the same
CN120936426A (zh) 2023-04-13 2025-11-11 3M创新有限公司 用于过滤装置的过滤介质及其制备和使用方法
WO2024214054A1 (en) 2023-04-13 2024-10-17 3M Innovative Properties Company Respiratory protection devices and methods of manufacturing the same
WO2025125970A1 (en) 2023-12-15 2025-06-19 3M Innovative Properties Company Respiratory protection devices and methods of manufacturing the same
WO2025125969A1 (en) 2023-12-15 2025-06-19 3M Innovative Properties Company Respiratory protection devices and methods of manufacturing the same
WO2025133782A1 (en) 2023-12-18 2025-06-26 3M Innovative Properties Company Respiratory protection devices and methods of manufacturing the same
WO2025202974A1 (en) 2024-03-29 2025-10-02 3M Innovative Properties Company Respirators, respirator materials and methods of manufacturing the same
WO2026050097A1 (en) 2024-08-28 2026-03-05 Delstar Technologies, Inc. Cleanable filter medium
EP4721833A1 (en) 2024-10-04 2026-04-08 Neenah Gessner GmbH A non-woven filter media with a meltblown and nanofibers
WO2026088005A1 (en) 2024-10-21 2026-04-30 3M Innovative Properties Company Personal protective equipment, methods and systems of use thereof

Family Cites Families (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US30782A (en) * 1860-11-27 John wright
US32171A (en) * 1861-04-30 Coiffibinatioit-lbck
US35062A (en) * 1862-04-22 Stuart perry
US3094547A (en) * 1961-02-06 1963-06-18 Minnesota Mining & Mfg Perfluoroalkylsulfonamidoalkyl esters of phosphorus acids
US3493462A (en) * 1962-07-06 1970-02-03 Du Pont Nonpatterned,nonwoven fabric
US3485705A (en) * 1966-11-08 1969-12-23 Johnson & Johnson Nonwoven fabric and method of manufacturing the same
CH481963A (de) * 1967-06-08 1969-11-30 Ciba Geigy Neue härtbare Mischungen aus Diepoxydverbindungen, disekundären Aminen sowie mindestens 3 Aminwasserstoffatome enthaltenden Polyaminen
US3485706A (en) * 1968-01-18 1969-12-23 Du Pont Textile-like patterned nonwoven fabrics and their production
US3817958A (en) * 1972-11-22 1974-06-18 Du Pont Oil and water repellent
US3971373A (en) * 1974-01-21 1976-07-27 Minnesota Mining And Manufacturing Company Particle-loaded microfiber sheet product and respirators made therefrom
NL160303C (nl) * 1974-03-25 1979-10-15 Verto Nv Werkwijze voor het vervaardigen van een vezelfilter.
US4100324A (en) * 1974-03-26 1978-07-11 Kimberly-Clark Corporation Nonwoven fabric and method of producing same
US4188690A (en) * 1976-02-25 1980-02-19 Mitsubishi Rayon Company, Limited Nonwoven fabric and manufacturing method thereof
CA1073648A (en) * 1976-08-02 1980-03-18 Edward R. Hauser Web of blended microfibers and crimped bulking fibers
US4086499A (en) * 1976-11-26 1978-04-25 Uniroyal Ltd. Stable electrets of styrene-type polymers
US4215682A (en) * 1978-02-06 1980-08-05 Minnesota Mining And Manufacturing Company Melt-blown fibrous electrets
CA1107950A (en) * 1978-08-10 1981-09-01 Anupama Mishra Electret made of branched alpha-olefin polymer
JPS60947B2 (ja) * 1978-10-16 1985-01-11 三井化学株式会社 エレクトレツト
US4297492A (en) * 1979-03-23 1981-10-27 Ciba-Geigy Corporation Phenolic-1,3,5-triazines
US4722806A (en) * 1982-02-19 1988-02-02 The B. F. Goodrich Company Alkylated polyalkylenepolyamines, substituted oxo-piperazinyl-triazines and UV light stabilized compositions
US4429001A (en) * 1982-03-04 1984-01-31 Minnesota Mining And Manufacturing Company Sheet product containing sorbent particulate material
US4492791A (en) * 1982-05-04 1985-01-08 Ciba-Geigy Corporation Process for the preparation of polyaminotriazines
US4429791A (en) * 1982-06-01 1984-02-07 Hamilton Glass Products Incorporated Mirror package and method of forming
AU565762B2 (en) * 1983-02-04 1987-09-24 Minnesota Mining And Manufacturing Company Method and apparatus for manufacturing an electret filter medium
US4701237A (en) * 1983-10-17 1987-10-20 Kimberly-Clark Corporation Web with enhanced fluid transfer properties and method of making same
DE3509857C2 (de) * 1984-03-19 1994-04-28 Toyo Boseki Elektretisiertes Staubfilter und dessen Herstellung
JPS60196921A (ja) * 1984-03-19 1985-10-05 東洋紡績株式会社 エレクトレツト化材料の製造法
US4536440A (en) * 1984-03-27 1985-08-20 Minnesota Mining And Manufacturing Company Molded fibrous filtration products
US4874659A (en) * 1984-10-24 1989-10-17 Toray Industries Electret fiber sheet and method of producing same
US5099026A (en) * 1986-09-12 1992-03-24 Crater Davis H Fluorochemical oxazolidinones
DE3839956C2 (de) * 1987-11-28 1998-07-02 Toyo Boseki Elektret-Folie und Verfahren zu ihrer Herstellung
JP2672329B2 (ja) * 1988-05-13 1997-11-05 東レ株式会社 エレクトレット材料
US4886058A (en) * 1988-05-17 1989-12-12 Minnesota Mining And Manufacturing Company Filter element
CA2037942A1 (en) * 1990-03-12 1991-09-13 Satoshi Matsuura Process for producing an electret, a film electret, and an electret filter
DE4008080A1 (de) * 1990-03-14 1991-09-19 Standard Elektrik Lorenz Ag Atm-vermittlungsstelle
US5145727A (en) * 1990-11-26 1992-09-08 Kimberly-Clark Corporation Multilayer nonwoven composite structure
JPH05214A (ja) * 1990-11-30 1993-01-08 Mitsui Petrochem Ind Ltd エレクトレツトフイルター
JP3193408B2 (ja) * 1991-08-13 2001-07-30 興研株式会社 エア・フィルタおよびその製造方法
US5260360A (en) * 1991-10-18 1993-11-09 Minnesota Mining And Manufacturing Company Oil, water and sweat repellent microporous membrane materials
AU669420B2 (en) * 1993-03-26 1996-06-06 Minnesota Mining And Manufacturing Company Oily mist resistant electret filter media
PL173854B1 (pl) * 1993-08-17 1998-05-29 Minnesota Mining & Mfg Sposób wytwarzania elektretowego środka filtracyjnego
JP2765690B2 (ja) 1993-12-27 1998-06-18 花王株式会社 清掃用シート
US5478377A (en) * 1994-07-22 1995-12-26 The United States Of America As Represented By The Secretary Of The Army Filter for a respiratory device
DE9414040U1 (de) * 1994-08-30 1995-01-19 Hoechst Ag, 65929 Frankfurt Vliese aus Elektretfasermischungen mit verbesserter Ladungsstabilität
US5645627A (en) * 1995-02-28 1997-07-08 Hollingsworth & Vose Company Charge stabilized electret filter media
US5620785A (en) * 1995-06-07 1997-04-15 Fiberweb North America, Inc. Meltblown barrier webs and processes of making same
US5610455A (en) * 1995-06-29 1997-03-11 Minnesota Mining And Manufacturing Company Electret containing syndiotactic vinyl aromatic polymer
US5709735A (en) * 1995-10-20 1998-01-20 Kimberly-Clark Worldwide, Inc. High stiffness nonwoven filter medium

Also Published As

Publication number Publication date
JP4069195B2 (ja) 2008-04-02
EP0845058A1 (en) 1998-06-03
EP0845058B1 (en) 2003-04-23
US6268495B1 (en) 2001-07-31
CN1192790A (zh) 1998-09-09
BR9610200A (pt) 1998-08-04
KR100405072B1 (ko) 2004-03-24
WO1997007272A1 (en) 1997-02-27
AU700461B2 (en) 1999-01-07
CN1188559C (zh) 2005-02-09
US6002017A (en) 1999-12-14
MX9800828A (es) 1998-04-30
DE69627670T2 (de) 2004-04-08
AU6648196A (en) 1997-03-12
JPH11510862A (ja) 1999-09-21
DE69627670D1 (de) 2003-05-28
KR19990036362A (ko) 1999-05-25
ES2195001T3 (es) 2003-12-01
US5976208A (en) 1999-11-02
US5919847A (en) 1999-07-06
US5968635A (en) 1999-10-19
US5908598A (en) 1999-06-01

Similar Documents

Publication Publication Date Title
EP0845058B1 (en) Fibrous webs having enhanced electret properties
KR101577089B1 (ko) 전하 증대 첨가제를 갖는 일렉트릿 웨브
EP2004302B1 (en) Electrets and compounds useful in electrets
KR101554052B1 (ko) 전하 증대 접착제를 갖는 일렉트릿 웨브
US6123752A (en) High efficiency synthetic filter medium
US10724171B2 (en) Electret webs with charge-enhancing additives
WO2010114742A2 (en) Electret webs with charge-enhancing additives
EP2297086A2 (en) Charge-enhancing additives for electrets
KR20170021853A (ko) 전하 증대 첨가제를 갖는 일렉트릿 웨브
CN115516149B (zh) 取代的硫醇熔体添加剂
EP4069898B1 (en) Thiolate salt melt additives
EP4069899B1 (en) Aromatic-heterocyclic ring melt additives
EP4097284B1 (en) Substituted thiolate salt melt additives

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued