Filter material of ceramic oxide fibers and vermiculite particles
AssigneeMinnesota Mining and Manufacturing Company
InventorsThomas L. Tompkins, Edward M. Fischer, Timothy J. Gennrich, Steven R. Paulson
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Abstract
Filter material comprising fabric of ceramic oxide fibers and vermiculite particulate is disclosed. The presence of the vermiculite provides an improvement in the flexural endurance of the fabric.
Claims22
A filter material comprising fabric of ceramic oxide fibers and vermiculite particulate, said fibers collectively having an outer surface, at least a portion of said outer surface being covered by a sufficient amount of vermiculite particulate such that said filter material has an increased flexural endurance over the fabric without the presence of said vermiculite of at least 100 percent, said filter material having a gas permeability of at least 0.15 l/min/cm.sup.2.
Dependencies are inferred from the claim text.