DE2904170A1 - Elektret in form von fasrigem bahnenmaterial - Google Patents

Elektret in form von fasrigem bahnenmaterial

Info

Publication number
DE2904170A1
DE2904170A1 DE19792904170 DE2904170A DE2904170A1 DE 2904170 A1 DE2904170 A1 DE 2904170A1 DE 19792904170 DE19792904170 DE 19792904170 DE 2904170 A DE2904170 A DE 2904170A DE 2904170 A1 DE2904170 A1 DE 2904170A1
Authority
DE
Germany
Prior art keywords
fibers
electret
fibrous
charge
sheet material
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.)
Ceased
Application number
DE19792904170
Other languages
German (de)
English (en)
Inventor
Charles I Davis
Donald A Kubik
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
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of DE2904170A1 publication Critical patent/DE2904170A1/de
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/1138—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration
    • A41D13/1146—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration obtained by moulding
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
    • 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
    • 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
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—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 by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • 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
    • 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
    • Y10S55/00—Gas separation
    • Y10S55/35—Respirators and register 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
    • Y10S55/39—Electrets separator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Business, Economics & Management (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Filtering Materials (AREA)
  • Nonwoven Fabrics (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Semiconductor Lasers (AREA)
  • Led Devices (AREA)
  • Electrostatic Separation (AREA)
DE19792904170 1978-02-06 1979-02-05 Elektret in form von fasrigem bahnenmaterial Ceased DE2904170A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/875,614 US4215682A (en) 1978-02-06 1978-02-06 Melt-blown fibrous electrets

Publications (1)

Publication Number Publication Date
DE2904170A1 true DE2904170A1 (de) 1979-08-09

Family

ID=25366080

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792904170 Ceased DE2904170A1 (de) 1978-02-06 1979-02-05 Elektret in form von fasrigem bahnenmaterial

Country Status (16)

Country Link
US (1) US4215682A (US07968547-20110628-C00004.png)
JP (2) JPS59124B2 (US07968547-20110628-C00004.png)
AT (1) AT380126B (US07968547-20110628-C00004.png)
AU (1) AU507773B2 (US07968547-20110628-C00004.png)
BR (1) BR7900546A (US07968547-20110628-C00004.png)
CA (1) CA1122546A (US07968547-20110628-C00004.png)
CH (1) CH642277A5 (US07968547-20110628-C00004.png)
DE (1) DE2904170A1 (US07968547-20110628-C00004.png)
DK (1) DK157286C (US07968547-20110628-C00004.png)
ES (1) ES477436A1 (US07968547-20110628-C00004.png)
FR (1) FR2416535A1 (US07968547-20110628-C00004.png)
GB (1) GB2015253B (US07968547-20110628-C00004.png)
IT (1) IT1116822B (US07968547-20110628-C00004.png)
NL (1) NL7900855A (US07968547-20110628-C00004.png)
NO (1) NO151092C (US07968547-20110628-C00004.png)
SE (1) SE444893B (US07968547-20110628-C00004.png)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090062A1 (de) * 1982-03-29 1983-10-05 Rhodia Ag Verfahren und Vorrichtung zur Herstellung von Elektret-Filamenten, -Spinnfasern oder dergleichen
EP0162546A1 (en) * 1984-03-27 1985-11-27 Minnesota Mining And Manufacturing Company Molded fibrous filtration products
DE3719420A1 (de) * 1987-06-11 1988-12-29 Sandler Helmut Helsa Werke Atemschutzmaske
DE3908498A1 (de) * 1988-03-15 1989-09-28 Maico Elektroapparate Luefter
EP0391726A2 (en) * 1989-04-07 1990-10-10 JOHNSON & JOHNSON MEDICAL, INC. Improved filtration medium and face mask containing the same
DE10063518A1 (de) * 2000-12-20 2002-07-04 Sandler Helmut Helsa Werke Verfahren zum elektrostatischen Spinnen von Polymeren zum Erhalt von Nano- und Mikrofasern
DE10152785A1 (de) * 2001-04-24 2002-11-07 Ulrich Lersch Atemluftfilter

Families Citing this family (370)

* Cited by examiner, † Cited by third party
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JPS5624013A (en) * 1979-05-04 1981-03-07 Nitta Kk Structure of air filter element
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
US4467799A (en) * 1980-05-05 1984-08-28 Steinberg Jacob H Transparent odor-free face mask
ZA813132B (en) * 1980-05-14 1982-12-29 Surgikos Inc Disposable surgical apparel and method of producing it
ZA813133B (en) * 1980-05-14 1982-12-29 Surgikos Inc Disposable surgical face mask and method of producing it
US4376642A (en) * 1980-08-18 1983-03-15 Biotech Electronics Ltd. Portable air cleaner unit
US4375718A (en) * 1981-03-12 1983-03-08 Surgikos, Inc. Method of making fibrous electrets
US4462399A (en) * 1981-10-02 1984-07-31 Minnesota Mining And Manufacturing Company Powered air respirator and cartridge
US5720832A (en) * 1981-11-24 1998-02-24 Kimberly-Clark Ltd. Method of making a meltblown nonwoven web containing absorbent particles
AU565762B2 (en) * 1983-02-04 1987-09-24 Minnesota Mining And Manufacturing Company Method and apparatus for manufacturing an electret filter medium
US4643182A (en) * 1983-04-20 1987-02-17 Max Klein Disposable protective mask
US4456648A (en) * 1983-09-09 1984-06-26 Minnesota Mining And Manufacturing Company Particulate-modified electret fibers
US4547420A (en) * 1983-10-11 1985-10-15 Minnesota Mining And Manufacturing Company Bicomponent fibers and webs made therefrom
US4795668A (en) * 1983-10-11 1989-01-03 Minnesota Mining And Manufacturing Company Bicomponent fibers and webs made therefrom
AU569108B2 (en) * 1983-10-11 1988-01-21 Minnesota Mining And Manufacturing Company Web of bicomponent fibers
US4729371A (en) * 1983-10-11 1988-03-08 Minnesota Mining And Manufacturing Company Respirator comprised of blown bicomponent fibers
JPS60168511A (ja) * 1984-02-10 1985-09-02 Japan Vilene Co Ltd エレクトレツトフイルタの製造方法
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
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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US5993943A (en) * 1987-12-21 1999-11-30 3M Innovative Properties Company Oriented melt-blown fibers, processes for making such fibers and webs made from such fibers
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)
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CA2124237C (en) * 1994-02-18 2004-11-02 Bernard Cohen Improved nonwoven barrier and method of making the same
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GB2015253B (en) 1982-08-25
AU4391279A (en) 1979-09-06
NO151092B (no) 1984-10-29
DK45179A (da) 1979-08-07
CH642277A5 (de) 1984-04-13
GB2015253A (en) 1979-09-05
FR2416535A1 (fr) 1979-08-31
NO151092C (no) 1985-02-06
SE444893B (sv) 1986-05-20
SE7900929L (sv) 1979-08-07
JPH027671B2 (US07968547-20110628-C00004.png) 1990-02-20
AT380126B (de) 1986-04-10
IT1116822B (it) 1986-02-10
JPS54113900A (en) 1979-09-05
BR7900546A (pt) 1979-09-11
US4215682A (en) 1980-08-05
AU507773B2 (en) 1980-02-28
DK157286B (da) 1989-12-04
IT7947886A0 (it) 1979-02-05
NL7900855A (nl) 1979-08-08
ES477436A1 (es) 1980-09-01
FR2416535B1 (US07968547-20110628-C00004.png) 1984-02-03
NO790347L (no) 1979-08-07
DK157286C (da) 1990-05-07
JPS59124B2 (ja) 1984-01-05
CA1122546A (en) 1982-04-27
JPS62290477A (ja) 1987-12-17
ATA82779A (de) 1985-08-15

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