Electrostatic fibrous filter web

Details Electrostatic fibrous filter web Electrostatic fibrous filter web

1996-02-26

1998-08-11

Chiesa, Richard L.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

55486, 55528, 55DIG39, 96 69, 442 36, B03C 3155

Patent

active

057922420

ABSTRACT:
There is provided a nonwoven electret fiber filter formed with a nonwoven web of electret fibers needle-punched to an open scrim support. The scrim support material has individual discrete open areas with an average cross-sectional area as viewed from the plane of the filter media of at least 0.25 mm.sup.2, preferably 1.0 mm.sup.2, and a pressure drop across the scrim support, without the filter web, of less than 1.5 mm H.sub.2 O measured at 98.4 meters/min gaseous face velocity. The resulting filter has enhanced lifetimes, a low pressure drop and high filtration efficiencies.

REFERENCES:
patent: Re30782 (1981-10-01), van Turnhout
patent: Re31285 (1983-06-01), van Turnhout
patent: 3675403 (1972-07-01), Ruffo
patent: 4215682 (1980-08-01), Kubik et al.
patent: 4363682 (1982-12-01), Thiebault
patent: 4456648 (1984-06-01), Adamse et al.
patent: 4478620 (1984-10-01), Tamura
patent: 4588537 (1986-05-01), Klaase et al.
patent: 4592815 (1986-06-01), Nakao
patent: 4789504 (1988-12-01), Ohmori et al.
patent: 4798850 (1989-01-01), Brown
patent: 4874399 (1989-10-01), Reed et al.
patent: 4904174 (1990-02-01), Moosmayer et al.
patent: 5037455 (1991-08-01), Scheineson et al.
patent: 5038775 (1991-08-01), Maruscak et al.
patent: 5122048 (1992-06-01), Deeds
patent: 5230800 (1993-07-01), Nelson
patent: 5401446 (1995-03-01), Tsai et al.
patent: 5419953 (1995-05-01), Chapman
patent: 5436054 (1995-07-01), Tani et al.
patent: 5620785 (1997-04-01), Watt et al.

Affiliated with

Also associated with

Rating

Electrostatic fibrous filter web does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrostatic fibrous filter web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatic fibrous filter web will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-385017