Composite fluid filtering medium and method of making

Details Composite fluid filtering medium and method of making Composite fluid filtering medium and method of making

1976-10-18

1978-07-11

Lutter, Frank W.

Gas separation

Two or more separators

Plies or layers of different characteristics or orientation

55524, 55DIG5, 55DIG13, 55DIG16, 156309, 156331, 156334, 428311, 428314, 428315, B01D 3916

Patent

active

040999432

ABSTRACT:
A layer of open cell polyurethane foam adhered to a layer of a non-woven fibrous material of fine porosity relative to the foam results in an efficient fluid (e.g., air) filtering medium having a high capacity for retaining particulate contaminants. The combined layers are useful as an air filter element.

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