Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1991-03-18
1992-03-24
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
428181, 428184, 428213, 428215, 428220, 428228, 428251, 428252, 428288, 428296, 4283115, 428343, 428349, 428435, 4284777, 55497, 55499, 55500, 55501, 55521, 55 97, 2104935, B01D 3908, B01D 4610, B32B 328
Patent
active
050987674
ABSTRACT:
A high efficiency air filter is described which comprises a depth filter sheet that has been formed with micropleats stabilized by application of a strip of a thermoplastic adhesive across the peaks of the micropleats and then formed into a macropleated structure with the axes of the micropleats and the macropleats being essentially parallel. The micropleats preferably have a bending radius of less than about 0.01 inch.
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Pall Corporation
Robinson Ellis P.
Watkins III William P.
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