IT1091525B - Procedimento per la fabbricazione di un filtro di fibre di eletrete caricate elettricamente e filtro ottenuto con il procedimento - Google Patents

Procedimento per la fabbricazione di un filtro di fibre di eletrete caricate elettricamente e filtro ottenuto con il procedimento

Info

Publication number
IT1091525B
IT1091525B IT69885/77A IT6988577A IT1091525B IT 1091525 B IT1091525 B IT 1091525B IT 69885/77 A IT69885/77 A IT 69885/77A IT 6988577 A IT6988577 A IT 6988577A IT 1091525 B IT1091525 B IT 1091525B
Authority
IT
Italy
Prior art keywords
procedure
manufacture
electrically charged
filter
electric fiber
Prior art date
Application number
IT69885/77A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT1091525B publication Critical patent/IT1091525B/it

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
    • D04H13/00—Other non-woven fabrics
    • D04H13/02—Production of non-woven fabrics by partial defibrillation of oriented thermoplastics films
    • 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
    • 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
    • D04H1/04—Non-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
    • D04H1/06—Non-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
    • 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
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • 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
    • D04H13/00—Other non-woven fabrics
    • 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
    • B01D2239/0636—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
    • B01D2239/069—Special geometry of layers
    • B01D2239/0695—Wound 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
    • B01D2239/10—Filtering material manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/48—Processes of making filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/05—Methods of making filter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/39—Electrets separator
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
IT69885/77A 1976-12-23 1977-12-22 Procedimento per la fabbricazione di un filtro di fibre di eletrete caricate elettricamente e filtro ottenuto con il procedimento IT1091525B (it)

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
IT1091525B true IT1091525B (it) 1985-07-06

Family

ID=19827446

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69885/77A IT1091525B (it) 1976-12-23 1977-12-22 Procedimento per la fabbricazione di un filtro di fibre di eletrete caricate elettricamente e filtro ottenuto con il procedimento

Country Status (14)

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

Families Citing this family (148)

* Cited by examiner, † Cited by third party
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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
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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
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DK152016C (da) 1988-07-11
DK575777A (da) 1978-06-24
IE46020B1 (en) 1983-01-26
DE2756826C2 (de) 1985-08-22
USRE31285E (en) 1983-06-21
DD133299A5 (de) 1978-12-27
NL7614376A (nl) 1978-06-27
IE46020L (en) 1978-06-23
NL181632C (nl) 1987-10-01
NL181632B (nl) 1987-05-04
FR2374939B1 (it) 1982-11-26
US4178157A (en) 1979-12-11
JPS5714467B2 (it) 1982-03-24
FR2374939A1 (fr) 1978-07-21
BE862156A (nl) 1978-06-22
DE2756826A1 (de) 1978-07-06
GB1572199A (en) 1980-07-23
CH627803A5 (de) 1982-01-29
DK152016B (da) 1988-01-25
CA1105217A (en) 1981-07-21
LU78749A1 (it) 1978-04-17
JPS5388272A (en) 1978-08-03

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