DD133299A5 - Verfahren zur herstellung eines filters aus elektretfasermaterial - Google Patents

Verfahren zur herstellung eines filters aus elektretfasermaterial

Info

Publication number
DD133299A5
DD133299A5 DD7700202926A DD20292677A DD133299A5 DD 133299 A5 DD133299 A5 DD 133299A5 DD 7700202926 A DD7700202926 A DD 7700202926A DD 20292677 A DD20292677 A DD 20292677A DD 133299 A5 DD133299 A5 DD 133299A5
Authority
DD
German Democratic Republic
Prior art keywords
electretic
filter
producing
fiber material
fiber
Prior art date
Application number
DD7700202926A
Other languages
English (en)
Inventor
Turnhout Jan Van
Johannes C Rieke
Original Assignee
Verto Nv
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 Verto Nv filed Critical Verto Nv
Publication of DD133299A5 publication Critical patent/DD133299A5/de

Links

Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H13/00Other non-woven fabrics
    • D04H13/02Production of non-woven fabrics by partial defibrillation of oriented thermoplastics films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B01D39/163Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • D04H1/06Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres by treatment to produce shrinking, swelling, crimping or curling of fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/42Non-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
    • D04H1/4282Addition polymers
    • D04H1/4291Olefin series
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H13/00Other non-woven fabrics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04Additives and treatments of the filtering material
    • B01D2239/0435Electret
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604Arrangement of the fibres in the filtering material
    • B01D2239/0636Two or more types of fibres present in the filter material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/069Special geometry of layers
    • B01D2239/0695Wound layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10Filtering material manufacturing
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/48Processes of making filters
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00Gas separation
    • Y10S55/05Methods of making filter
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00Gas separation
    • Y10S55/39Electrets separator
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2922Nonlinear [e.g., crimped, coiled, etc.]

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
DD7700202926A 1976-12-23 1977-12-23 Verfahren zur herstellung eines filters aus elektretfasermaterial DD133299A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7614376,A NL181632C (nl) 1976-12-23 1976-12-23 Electreetfilter en werkwijze voor het vervaardigen daarvan.

Publications (1)

Publication Number Publication Date
DD133299A5 true DD133299A5 (de) 1978-12-27

Family

ID=19827446

Family Applications (1)

Application Number Title Priority Date Filing Date
DD7700202926A DD133299A5 (de) 1976-12-23 1977-12-23 Verfahren zur herstellung eines filters aus elektretfasermaterial

Country Status (14)

Country Link
US (2) US4178157A (de)
JP (1) JPS5388272A (de)
BE (1) BE862156A (de)
CA (1) CA1105217A (de)
CH (1) CH627803A5 (de)
DD (1) DD133299A5 (de)
DE (1) DE2756826C2 (de)
DK (1) DK152016C (de)
FR (1) FR2374939A1 (de)
GB (1) GB1572199A (de)
IE (1) IE46020B1 (de)
IT (1) IT1091525B (de)
LU (1) LU78749A1 (de)
NL (1) NL181632C (de)

Families Citing this family (151)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL160303C (nl) 1974-03-25 1979-10-15 Verto Nv Werkwijze voor het vervaardigen van een vezelfilter.
DE2927238A1 (de) * 1978-07-07 1980-01-17 Holm Varde As Kunststoff-verstaerkungsfasern und verfahren zu ihrer herstellung
JPS55113520A (en) * 1979-02-26 1980-09-02 Sansou Jushi Kogyo Kk Electret fiber
US4308223A (en) * 1980-03-24 1981-12-29 Albany International Corp. Method for producing electret fibers for enhancement of submicron aerosol filtration
FR2480807A1 (fr) * 1980-04-18 1981-10-23 Seplast Sa Procede de traitement superficiel d'une couche filtrante fibreuse, non tissee et tres aeree, formant electret et son application aux filtres et aux masques respiratoires notamment
US4376642A (en) * 1980-08-18 1983-03-15 Biotech Electronics Ltd. Portable air cleaner unit
US4513049A (en) 1983-04-26 1985-04-23 Mitsui Petrochemical Industries, Ltd. Electret article
US4456648A (en) * 1983-09-09 1984-06-26 Minnesota Mining And Manufacturing Company Particulate-modified electret fibers
DE3509857C2 (de) * 1984-03-19 1994-04-28 Toyo Boseki Elektretisiertes Staubfilter und dessen Herstellung
US4807619A (en) 1986-04-07 1989-02-28 Minnesota Mining And Manufacturing Company Resilient shape-retaining fibrous filtration face mask
US4874399A (en) 1988-01-25 1989-10-17 Minnesota Mining And Manufacturing Company Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene)
DE3908498C2 (de) * 1988-03-15 1997-08-21 Maico Elektroapparate Lüfter
US5266369A (en) * 1988-09-21 1993-11-30 Toray Industries, Inc. Packaging material made of electret material and packaging method
DE3904623A1 (de) * 1989-02-16 1990-08-23 Sandler Helmut Helsa Werke Filter, insbes. fuer ein fahrzeug
JP2788976B2 (ja) * 1989-04-26 1998-08-20 ジャパンゴアテック株式会社 フィルター材
CA2037942A1 (en) * 1990-03-12 1991-09-13 Satoshi Matsuura Process for producing an electret, a film electret, and an electret filter
JPH05214A (ja) * 1990-11-30 1993-01-08 Mitsui Petrochem Ind Ltd エレクトレツトフイルター
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
US5230800A (en) * 1992-02-20 1993-07-27 Minnesota Mining And Manufacturing Company Scrim inserted electrostatic fibrous filter web
US5374458A (en) * 1992-03-13 1994-12-20 Minnesota Mining And Manufacturing Company Molded, multiple-layer face mask
DE4241517C2 (de) * 1992-12-10 1995-09-21 Freudenberg Carl Fa Verfahren und Vorrichtung zur Herstellung eines Spinnvliesstoffes
US5268009A (en) * 1992-12-22 1993-12-07 Teledyne Industries, Inc. Portable air filter system
AU669420B2 (en) * 1993-03-26 1996-06-06 Minnesota Mining And Manufacturing Company Oily mist resistant electret filter media
US5499917A (en) * 1993-06-29 1996-03-19 Minnesota Mining And Manufacturing Company Dental isolation dam
US5658640A (en) * 1993-08-17 1997-08-19 Minnesota Mining And Manufacturing Company Electret filter media having an undulated surface
ES2128590T3 (es) * 1993-08-17 1999-05-16 Minnesota Mining & Mfg Metodo para cargar medios filtrantes con electretos.
EP0646416A1 (de) * 1993-10-04 1995-04-05 Trion Inc. Bipolar geladener Filter und Methode seiner Benutzung
KR950010936A (ko) * 1993-10-20 1995-05-15 시바타 미노루 엘렉트릿 필터
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
EP0789612B1 (de) * 1994-10-31 2002-09-04 Kimberly-Clark Worldwide, Inc. Hochdichte faservliesfiltermedien
WO1996017569A2 (en) * 1994-12-08 1996-06-13 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
WO1996028216A1 (en) * 1995-03-09 1996-09-19 Minnesota Mining And Manufacturing Company Fold flat respirators and processes for preparing same
US6568392B1 (en) 1995-09-11 2003-05-27 3M Innovative Properties Company Flat-folded personal respiratory protection devices and processes for preparing same
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
US5834384A (en) * 1995-11-28 1998-11-10 Kimberly-Clark Worldwide, Inc. Nonwoven webs with one or more surface treatments
US5792242A (en) * 1996-02-26 1998-08-11 Minnesota Mining And Manufacturing Co. Electrostatic fibrous filter web
US6070579A (en) 1996-03-08 2000-06-06 3M Innovative Properties Company Elastomeric composite headband
US5724677A (en) 1996-03-08 1998-03-10 Minnesota Mining And Manufacturing Company Multi-part headband and respirator mask assembly and process for making same
US5898981A (en) * 1996-04-30 1999-05-04 Minnesota Mining & Manufacturing Company Synthetic filter media and method for manufacturing same
US6211100B1 (en) * 1996-04-30 2001-04-03 Minnesota Mining And Manufacturing Company Synthetic filter media
US5706804A (en) * 1996-10-01 1998-01-13 Minnesota Mining And Manufacturing Company Liquid resistant face mask having surface energy reducing agent on an intermediate layer therein
IL119809A (en) * 1996-12-11 2001-06-14 Nicast Ltd A device for the production of a complex material for filtration and a method for its application
US6524488B1 (en) 1998-06-18 2003-02-25 3M Innovative Properties Company Method of filtering certain particles from a fluid using a depth loading filtration media
US5871836A (en) * 1997-08-27 1999-02-16 Airflo Europe N.V. Composite pleated fibrous structures containing split film fibers
US6213122B1 (en) 1997-10-01 2001-04-10 3M Innovative Properties Company Electret fibers and filter webs having a low level of extractable hydrocarbons
US6537932B1 (en) 1997-10-31 2003-03-25 Kimberly-Clark Worldwide, Inc. Sterilization wrap, applications therefor, and method of sterilizing
US6102039A (en) 1997-12-01 2000-08-15 3M Innovative Properties Company Molded respirator containing sorbent particles
US6365088B1 (en) 1998-06-26 2002-04-02 Kimberly-Clark Worldwide, Inc. Electret treatment of high loft and low density nonwoven webs
US6432175B1 (en) 1998-07-02 2002-08-13 3M Innovative Properties Company Fluorinated electret
US6110260A (en) 1998-07-14 2000-08-29 3M Innovative Properties Company Filter having a change indicator
US6280824B1 (en) 1999-01-29 2001-08-28 3M Innovative Properties Company Contoured layer channel flow filtration media
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
US6394090B1 (en) 1999-02-17 2002-05-28 3M Innovative Properties Company Flat-folded personal respiratory protection devices and processes for preparing same
US6279570B1 (en) 1999-03-02 2001-08-28 3M Innovative Properties Company Filter support, assembly and system
US6391807B1 (en) 1999-09-24 2002-05-21 3M Innovative Properties Company Polymer composition containing a fluorochemical oligomer
US6288157B1 (en) 1999-05-11 2001-09-11 3M Innovative Properties Company Alkylated fluorochemical oligomers and use thereof
US6525127B1 (en) 1999-05-11 2003-02-25 3M Innovative Properties Company Alkylated fluorochemical oligomers and use thereof in the treatment of fibrous substrates
US7049379B2 (en) * 1999-05-11 2006-05-23 3M Innovative Properties Company Alkylated fluorochemical oligomers and use thereof in the treatment of fibrous substrates
IL132945A0 (en) * 1999-06-07 2001-03-19 Nicast Ltd Filtering material and device and method of its manufacture
US6273938B1 (en) 1999-08-13 2001-08-14 3M Innovative Properties Company Channel flow filter
US6174964B1 (en) 1999-09-24 2001-01-16 3M Innovative Properties Company Fluorochemical oligomer and use thereof
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
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
US6454839B1 (en) 1999-10-19 2002-09-24 3M Innovative Properties Company Electrofiltration apparatus
US6391948B1 (en) 1999-12-14 2002-05-21 3M Innovative Properties Company Triazine compounds and use thereof
US6419729B1 (en) 2000-04-17 2002-07-16 3M Innovative Properties Company Filter assemblies with adhesive attachment systems
US6420024B1 (en) 2000-12-21 2002-07-16 3M Innovative Properties Company Charged microfibers, microfibrillated articles and use thereof
DE60100985T2 (de) * 2001-03-02 2004-07-29 Airflo Europe N.V. Mehrlagiger Filter und Verfahren zum Herstellen desselben
EP1247558A1 (de) * 2001-04-07 2002-10-09 3M Innovative Properties Company Kombinationsfilter zur Filtrierung von Fluiden
US6680114B2 (en) 2001-05-15 2004-01-20 3M Innovative Properties Company Fibrous films and articles from microlayer substrates
US6969484B2 (en) 2001-06-18 2005-11-29 Toray Industries, Inc. Manufacturing method and device for electret processed product
US6589317B2 (en) 2001-08-10 2003-07-08 3M Innovative Properties Company Structured surface filtration media array
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
US6758884B2 (en) 2002-08-07 2004-07-06 3M Innovative Properties Company Air filtration system using point ionization sources
US6874499B2 (en) * 2002-09-23 2005-04-05 3M Innovative Properties Company Filter element that has a thermo-formed housing around filter material
US7141098B2 (en) * 2004-01-22 2006-11-28 3M Innovative Properties Company Air filtration system using point ionization sources
US7235122B2 (en) * 2004-11-08 2007-06-26 E. I. Du Pont De Nemours And Company Filtration media for filtering particulate material from gas streams
US20060137317A1 (en) * 2004-12-28 2006-06-29 Bryner Michael A Filtration media for filtering particulate material from gas streams
US7419526B2 (en) * 2005-03-03 2008-09-02 3M Innovative Properties Company Conformal filter cartridges and methods
EP1874430B1 (de) * 2005-04-22 2008-11-12 3M Innovative Properties Company Luftfiltervorrichtungen für fahrgastzellen
US7393269B2 (en) 2005-09-16 2008-07-01 3M Innovative Properties Company Abrasive filter assembly and methods of making same
US7338355B2 (en) * 2006-06-13 2008-03-04 3M Innovative Properties Company Abrasive article and methods of making and using the same
US9134471B2 (en) * 2006-06-28 2015-09-15 3M Innovative Properties Company Oriented polymeric articles and method
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
US7981177B2 (en) * 2007-04-18 2011-07-19 Transweb, Llc Filtration media having a slit-film layer
US9770611B2 (en) 2007-05-03 2017-09-26 3M Innovative Properties Company Maintenance-free anti-fog respirator
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
US20080271740A1 (en) 2007-05-03 2008-11-06 3M Innovative Properties Company Maintenance-free flat-fold respirator that includes a graspable tab
CN101801465B (zh) 2007-09-20 2012-07-11 3M创新有限公司 具有可伸展的面罩主体的过滤式面具呼吸器
PT2222908E (pt) 2007-12-06 2013-03-28 3M Innovative Properties Co Tecidos de eletretos com aditivos que intensificam as cargas
US8282712B2 (en) 2008-04-07 2012-10-09 E I Du Pont De Nemours And Company Air filtration medium with improved dust loading capacity and improved resistance to high humidity environment
US7765698B2 (en) 2008-06-02 2010-08-03 3M Innovative Properties Company Method of making electret articles based on zeta potential
EP2297086A4 (de) * 2008-06-02 2012-01-25 3M Innovative Properties Co Ladungssteigernde zusätze für elektrete
AU2009255469B2 (en) 2008-06-02 2012-03-29 3M Innovative Properties Company Electret webs with charge-enhancing additives
US20110091717A1 (en) * 2008-06-30 2011-04-21 Weiss Douglas E Method for in situ formation of metal nanoclusters within a porous substrate field
US11083916B2 (en) 2008-12-18 2021-08-10 3M Innovative Properties Company Flat fold respirator having flanges disposed on the mask body
KR20110127696A (ko) 2009-02-20 2011-11-25 쓰리엠 이노베이티브 프로퍼티즈 컴파니 항미생물 일렉트릿 웨브
ES2435628T3 (es) 2009-04-03 2013-12-20 3M Innovative Properties Company Redes de electret con aditivos potenciadores de la carga
US20100252047A1 (en) 2009-04-03 2010-10-07 Kirk Seth M Remote fluorination of fibrous filter webs
KR101679894B1 (ko) 2009-04-03 2016-11-25 쓰리엠 이노베이티브 프로퍼티즈 컴파니 일렉트릿 웨브를 포함하는, 올레핀성 웨브를 위한 가공 보조제
DE102009037740A1 (de) * 2009-08-17 2011-02-24 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung eines Grasgarnes
EP2298096A2 (de) 2009-09-18 2011-03-23 3M Innovative Properties Co. Filtermaske mit Anzeiger von Erfassungsmittel
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
US8528560B2 (en) 2009-10-23 2013-09-10 3M Innovative Properties Company Filtering face-piece respirator having parallel line weld pattern in mask body
AU2010322186A1 (en) 2009-11-18 2012-05-31 3M Innovative Properties Company Reinforced filter media
WO2011090586A2 (en) 2009-12-30 2011-07-28 3M Innovative Properties Company Filtering face-piece respirator having an auxetic mesh in the mask body
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US11786853B2 (en) 2020-08-10 2023-10-17 F.N. Smith Corporation Facepiece electrostatic charging devices and methods thereof
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Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3336174A (en) * 1965-04-06 1967-08-15 Eastman Kodak Co Method of making a fibrous filter product
GB1094933A (en) * 1965-04-20 1967-12-13 Ici Ltd Self-crimping filaments
US3378997A (en) * 1965-09-28 1968-04-23 Matsui Mitsuo Method and apparatus for manufacturing bulky crimped yarn from synthetic resin films
GB1151076A (en) * 1966-01-31 1969-05-07 Chori Co Ltd Method and Apparatus for Manufacturing Bulky Crimped Yarn from Synthetic Resin Films.
US3608024A (en) * 1967-02-09 1971-09-21 Polymer Processing Res Inst Method for producing crimped conjugated split fiber
GB1167631A (en) * 1967-03-20 1969-10-15 Shell Int Research Process and apparatus for the fibrillation of thermoplastic films
US3550517A (en) * 1968-06-07 1970-12-29 Bell & Howell Co Triangulation rangefinding mechanism with locking device
US3578739A (en) * 1969-05-13 1971-05-18 Du Pont Apparatus for applying electrostatic charge to fibrous structure
US3966597A (en) * 1970-07-28 1976-06-29 Teijin Limited Oil or organic solvent-absorbent
BE789078A (nl) * 1971-09-22 1973-03-21 Tno Werkwijze en inrichting voor het verstrekken van kunststoffoelie
NL160303C (nl) * 1974-03-25 1979-10-15 Verto Nv Werkwijze voor het vervaardigen van een vezelfilter.

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JPS5388272A (en) 1978-08-03
IT1091525B (it) 1985-07-06
DE2756826C2 (de) 1985-08-22
IE46020B1 (en) 1983-01-26
USRE31285E (en) 1983-06-21
NL181632C (nl) 1987-10-01
BE862156A (nl) 1978-06-22
DK575777A (da) 1978-06-24
JPS5714467B2 (de) 1982-03-24
IE46020L (en) 1978-06-23
LU78749A1 (de) 1978-04-17
DK152016B (da) 1988-01-25
US4178157A (en) 1979-12-11
GB1572199A (en) 1980-07-23
DK152016C (da) 1988-07-11
CA1105217A (en) 1981-07-21
NL181632B (nl) 1987-05-04
NL7614376A (nl) 1978-06-27
FR2374939B1 (de) 1982-11-26
FR2374939A1 (fr) 1978-07-21
DE2756826A1 (de) 1978-07-06
CH627803A5 (de) 1982-01-29

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