Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Patent
1986-03-17
1988-02-23
Fisher, Richard V.
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
2104972, 210505, 264 8, 55487, B01D 2704, B01D 2914
Patent
active
047269014
ABSTRACT:
Cylindrical fibrous structures comprising a fibrous mass of nonwoven, synthetic, polymeric microfibers wherein the microfibers are substantially free of fiber-to-fiber bonding and secured to each other by mechanical entanglement or intertwining, the fiber structure having a substantially constant voids volume over at least a substantial portion of the structure and, preferably, a graded fiber diameter structure, both as measured in the radial direction. The structures are particularly useful as depth filters.
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Bradley Arthur
Brennan Timothy R.
Harwood Colin F.
Pall David B.
Fisher Richard V.
Millard Wanda L.
Pall Corporation
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