Length of material, in particular for filtering, method for its

Details Length of material, in particular for filtering, method for its Length of material, in particular for filtering, method for its

1987-04-21

1988-11-29

McCamish, Marion C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427365, 427366, 427412, 4273899, 427394, 428235, 428300, 428301, 4283111, 4283179, B32B 502

Patent

active

047881003

ABSTRACT:
A filter fabric comprises a needle felt substrate comprised of a non-woven air permeable fabric having spaced surfaces. An open pour air permeable plastic foam is incorporated into the substrate and extends from one surface toward the other.

REFERENCES:
patent: 3617442 (1971-11-01), Hurschman
patent: 4271222 (1981-06-01), Hahn
patent: 4369081 (1983-01-01), Curry et al.
patent: 4529643 (1985-07-01), Lundstrom
Verbessertes Entstaubungs Filter Medium Zur Oberfladen Filtration, Wasser, Luft und Betriebe, 1985, p. 49, Certified translation attached.
H. J. Ochs, Filterschaum-Perfekt in Vielen Bereichen, 1984, pp. 43-46.

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