Microporous paper filter for particulates

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 39/18 (2006.01) B01D 46/52 (2006.01) F01N 3/022 (2006.01) F01N 3/00 (2006.01)

Patent

CA 2467007

A microporous paper filter (10) for particulates emitted together with the exhaust gases of internal combustion engines, made in the form of a folded up sheet to form a "Greek key" i.e. having several filtering layers (13) placed substantially parallel, connected by means of folds (14), the layers (13) being separated and maintained equidistant through the interposition of spacers (20) each comprising at least one corrugated paper sheet (21, 22) or pleated paper (23).

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