Polyimide composite filter fabrics

Details Polyimide composite filter fabrics Polyimide composite filter fabrics

1991-02-14

1992-07-14

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428224, 428280, 428284, 428286, 428302, 210490, 210505, 210508, 21050039, 21050036, 21050043, B32B 516

Patent

active

051301342

ABSTRACT:
Composite filter cloths having a top layer of a heavily profiled, electro-statically charged polyimide fiber and a depth filtration type fabric substrate may be structured to have a higher particulate removal efficiency than that for the substrate layer and a lower pressure drop than that of the top layer.

REFERENCES:
patent: 3246767 (1962-08-01), Pall et al.
patent: 3353682 (1967-11-01), Pall et al.
patent: 3871850 (1975-03-01), Lenane
patent: 3937860 (1976-02-01), Gusman
patent: 4093437 (1978-06-01), Ichihara et al.
patent: 4117578 (1978-10-01), Forsten
patent: 4324574 (1982-04-01), Fagan
patent: 4840838 (1989-06-01), Wyss
patent: 4983434 (1991-01-01), Sassa
Turkson, "Comparison of Performance Characteristics of P84 Composite Fabrics and Other Fabrics in Dust Collectors", Filtration & Separation, Jan., Feb. 1990, pp. 20-21.

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