Patent ID: 8950587
Filing Date: 2015-02-10
Classification: B01D,G06K,Y10T

Abstract:
1. A filter media comprising: a first layer comprising glass fibers, wherein the fibers in the first layer have a first average diameter; a second layer adjacent to the first layer, the second layer comprising glass fibers, wherein the fibers in the second layer have a second average diameter, and wherein the first average diameter is greater than the second average diameter; and a third layer adjacent to the second layer, the third layer comprising synthetic polymer fibers, wherein the fibers in the third layer have an average length of at least about 1 inch, wherein the fibers in the third layer have a third average diameter, wherein the second average diameter is greater than the third average diameter, and wherein the third layer has a thickness of less than about 500 microns, wherein the synthetic polymer fibers are meltblown, meltspun, melt electrospun, and/or solvent electrospun fibers, wherein the filter media has a thickness of between about 5 mils and about 300 mils, and wherein the filter media has an overall permeability of between about 2 cfm/sf and about 50 cfm/sf.