Patent ID: 9433884
Filing Date: 2016-09-06
CPC Classification: B01D,Y10T

Claim Text:
1. A filtration media pack comprising: (a) a plurality of layers of single facer media wherein the layers of single facer media comprise a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face of the filtration media pack to a second face of the filtration media pack; (b) a first portion of the plurality of flutes being closed to unfiltered fluid flowing into the first portion of the plurality of flutes, and a second portion of the plurality off lutes being closed to unfiltered fluid flowing out of the second portion of the plurality of flutes so that fluid passing into one of the first face or the second face of the media pack and out the other of the first face or the second face of the media pack passes through media to provide filtration of the fluid; (c) the plurality of flutes having an average flute length of less than 5 inches, and at least one ridge extending along at least a portion of the flute length between adjacent peaks, the ridge comprising a discontinuity in the curvature of the flute between the adjacent peaks; and (d) the filtration media pack exhibiting a flute density (ρ) of at least 35.0 flute/inch wherein the number of channels is counted and the media cross sectional area is measured.