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1. WO2001060496 - MELT BLOWN COMPOSITE HEPA FILTER MEDIA AND VACUUM BAG

Publication Number WO/2001/060496
Publication Date 23.08.2001
International Application No. PCT/US2001/004716
International Filing Date 14.02.2001
IPC
B01D 39/16 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material
16of organic material, e.g. synthetic fibres
CPC
B01D 39/1623
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material ; ; Other filtering material
16of organic material, e.g. synthetic fibres
1607the material being fibrous
1623of synthetic origin
B01D 39/163
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material ; ; Other filtering material
16of organic material, e.g. synthetic fibres
1607the material being fibrous
1623of synthetic origin
163sintered or bonded
Y10S 264/48
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
264Plastic and nonmetallic article shaping or treating: processes
48Processes of making filters
Y10S 55/05
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
55Gas separation
05Methods of making filter
Y10S 55/39
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
55Gas separation
39Electrets separator
Applicants
  • HOLLINGSWORTH & VOSE COMPANY [US]/[US]
Inventors
  • COX, Stephen, T.
  • HEALY, David, T.
Agents
  • GEARY, William, C., III
Priority Data
60/182,62015.02.2000US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MELT BLOWN COMPOSITE HEPA FILTER MEDIA AND VACUUM BAG
(FR) MATERIAU FILTRANT HEPA COMPOSITE DE FUSION-SOUFFLAGE ET POCHE SOUS VIDE
Abstract
(EN) An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. Preferred charge additives include fatty acid amides and mixtures thereof.
(FR) Un matériau de filtre-électret comprend un additif ou des mélanges correspondants qui améliorent la stabilité de charge du matériau. Ledit matériau du filtre permet d'obtenir des valeurs alpha acceptables pour une gamme de réalisations de filtration sans diminution considérable des valeurs alpha dans le temps. Des additifs de charge préférés contiennent des amides d'acides gras et des mélanges correspondants.
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