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ATE340887T1 - COMPOSITE FILTER MATERIALS - Google Patents

COMPOSITE FILTER MATERIALS

Info

Publication number
ATE340887T1
ATE340887T1 AT04003231T AT04003231T ATE340887T1 AT E340887 T1 ATE340887 T1 AT E340887T1 AT 04003231 T AT04003231 T AT 04003231T AT 04003231 T AT04003231 T AT 04003231T AT E340887 T1 ATE340887 T1 AT E340887T1
Authority
AT
Austria
Prior art keywords
charged
polymer
precipitation electrode
forming
filler powder
Prior art date
Application number
AT04003231T
Other languages
German (de)
Inventor
Alexander Dubson
Original Assignee
Nicast Ltd
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 Nicast Ltd filed Critical Nicast Ltd
Application granted granted Critical
Publication of ATE340887T1 publication Critical patent/ATE340887T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/0007—Electro-spinning
    • D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
    • 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
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Filtering Materials (AREA)
  • Glass Compositions (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The present invention concerns a nonwoven composite fiber structure produced by a method of forming a polymer into said nonwoven composite fiber structure, the method comprising the steps of: (a) liquefying the polymer, thereby producing a liquefied polymer; (b) providing a precipitation electrode (10); (c) charging said liquefied polymer to a first electrical potential relative to said precipitation electrode (10) ; characterized in that (d) forming a surface on said liquefied polymer of sufficiently high curvature to cause at least one charged jet of said liquefied polymer to be drawn to said precipitation electrode (10) by said first electrical potential difference, thereby forming a charged matrix of polymer fibers on said precipitation electrode (10) and characterized in that (e) supplying an aerosol of charged filler powder to said precipitation electrode (10) in a manner that electrical forces between said charged filler powder and said charged matrix uniformly distribute said charged filler powder within said charged matrix, thereby forming a composite material therewith. <IMAGE>
AT04003231T 1996-12-11 1997-12-09 COMPOSITE FILTER MATERIALS ATE340887T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL1980996 1996-12-11

Publications (1)

Publication Number Publication Date
ATE340887T1 true ATE340887T1 (en) 2006-10-15

Family

ID=37102335

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04003231T ATE340887T1 (en) 1996-12-11 1997-12-09 COMPOSITE FILTER MATERIALS

Country Status (3)

Country Link
EP (1) EP1443136B1 (en)
AT (1) ATE340887T1 (en)
DE (1) DE69736753T2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1522605A (en) * 1974-09-26 1978-08-23 Ici Ltd Preparation of fibrous sheet product
DE4327595A1 (en) * 1993-08-17 1995-02-23 Hoechst Ag Compositions with improved electrostatic properties containing aromatic polyamides, molded articles made therefrom and their use and process for their production

Also Published As

Publication number Publication date
DE69736753T2 (en) 2007-08-16
EP1443136A1 (en) 2004-08-04
DE69736753D1 (en) 2006-11-09
EP1443136B1 (en) 2006-09-27

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties