Filter medium having flock islands of fibers anchored by calotte

Details Filter medium having flock islands of fibers anchored by calotte Filter medium having flock islands of fibers anchored by calotte

1991-11-13

1993-06-15

Drodge, Joseph W.

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

55477, 55514, 55528, 210508, 428 90, B01D 2900, B01D 3904

Patent

active

052194698

ABSTRACT:
A unitary filter medium that is composed of a sheet of porous substrate that has bonded to its upstream surface a plurality of separate spaced apart islands of flock fibers, the fibers of adjacent islands at least partially overlapping. The flock fibers are bonded by calotte shaped adhesive structures to the substrate so as to form porcupine-like arrays.

REFERENCES:
patent: 741210 (1903-10-01), Young
patent: 2369857 (1945-02-01), Russell et al.
patent: 2945557 (1960-07-01), Powers
patent: 3219194 (1965-11-01), Schwartzwalder et al.
patent: 3575764 (1971-04-01), McFarren
patent: 4610905 (1986-09-01), Von Blucher et al.
patent: 5002814 (1991-03-01), Knack et al.
patent: 5006399 (1991-04-01), Salminen et al.

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