Filter element with membrane and bicomponent substrate

Details Filter element with membrane and bicomponent substrate Filter element with membrane and bicomponent substrate

1999-03-26

2000-08-29

Spitzer, Robert H.

Gas separation

With means securing or retaining separating media

Discrete fibrous or particulate solids

55498, 55524, 55528, 55DIG5, 96 13, B01D 2913

Patent

active

061102490

ABSTRACT:
A filter element is adapted to be located in a gas stream. The filter element comprises a substrate having a structure selected from the group consisting of scrimed needled felt, scrimless needled felt, woven fabric and mesh. The substrate comprises at least two different materials. A first one of the materials has a first melting temperature. A second one of the materials has a second melting temperature lower than the first melting temperature. An expanded polytetrafluoroethylene filtering membrane is adapted to be located upstream relative to the substrate in the gas stream and supported by the substrate. The substrate is attached to the filtering membrane by the second material of the substrate melted to engage the membrane and fix the membrane to the substrate.

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