Scrim inserted electrostatic fibrous filter web

Details Scrim inserted electrostatic fibrous filter web Scrim inserted electrostatic fibrous filter web

1992-02-20

1993-07-27

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210505, 264 22, B01D 3904

Patent

active

052308006

ABSTRACT:
Provided is a nonwoven web of electrically charged fibers needle-punched to a scrim support. This web provides a filter medium having increased uniformity in pressure-drop, basis weight and filtration performance.

REFERENCES:
patent: Re30782 (1981-10-01), van Turnhout
patent: Re31285 (1983-06-01), van Turnhout et al.
patent: 4215682 (1980-08-01), Kubik et al.
patent: 4363682 (1982-12-01), Thiebault
patent: 4456648 (1984-06-01), Adamse et al.
patent: 4588537 (1986-05-01), Klaase et al.
patent: 4592815 (1986-06-01), Nakao
patent: 4623438 (1986-11-01), Felton et al.
patent: 4789504 (1988-12-01), Ohmori et al.
patent: 4874399 (1989-10-01), Reed et al.

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