Patent ID: 7115150

Claim:
A mist collection filter comprising a filter media, the filter media comprising: (a) a mist polish layer having a first end and a second end, said layer comprising a substantially planar sheet-like substrate having a first side and a second side, said layer having a plurality of pleats formed therein and extending from said first end to said second end, the layer comprising a substrate having a pore size less than 400 microns, a permeability of about 50 to 1000 feet per minute; a thickness of less than 0.05 inch and a basis weight greater than 30 lb.-3000 ft −2 ; (b) at least one of said first side or said second side of the substrate, substantially covered by a polymeric fine fiber layer, the layer having a thickness of about 0.2 to 100 microns, the fiber having a diameter of about 0.01 to about 5 microns and said media layer being secured in said filter wherein the filter has the capacity of collecting and draining in a liquid form at least 50 mg/m 3 of mist.