US 9,809,928 B2
Product to promote fluid flow
David E Fish, Bellevue, WA (US); Hugh West, Seattle, WA (US); and Linda A Beltz, Gig Harbor, WA (US)
Assigned to INTERNATIONAL PAPER COMPANY, Memphis, TN (US)
Filed by David E Fish, Bellevue, WA (US); Hugh West, Seattle, WA (US); and Linda A Beltz, Gig Harbor, WA (US)
Filed on Jan. 25, 2007, as Appl. No. 11/627,291.
Prior Publication US 2008/0179027 A1, Jul. 31, 2008
This patent is subject to a terminal disclaimer.
Int. Cl. D21H 11/16 (2006.01); A61F 13/537 (2006.01); A61F 13/53 (2006.01)
CPC D21H 11/16 (2013.01) [A61F 13/537 (2013.01); A61F 2013/530007 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A cellulose pulp particle having the shape of a general prismatoid having two parallel bases, the pulp particle comprising hydrogen bonded cellulose pulp fibers in a wet laid pulp sheet form, one of the bases having an area that is equal to or greater than the area of the other base, the area of the larger base being equal to or less than 35 mm2 and equal to or greater than 8 mm2, and the height of the particle being equal to or greater than 0.9 mm and equal to or less than 6 mm, wherein the base of the particle has a dimension greater than the height of the particle, wherein the particle does not contain bulking fibers and wherein the particle has a basis weight of from 600 g/m2to 1000 g/m2.