Patent ID: 6395046
Filing Date: 2002-05-28
Classification: B01D,B32B,D04H,D21H,Y10S

Abstract:
A dust filter bag comprising a plurality of layers constituted of at least. one layer of a carrier material and at least one non-woven tissue layer, said at least one non-woven tissue layer being a nano non-woven tissue layer with an average fiber diameter of 10 to 1000 nm, a basis weight of about 0.05 to 2 g/m2, and an air permeability of about 1500 to 20,000 l/m2, l/m2Ã—s, and wherein said at least one carrier material layer has an air permeability of greater than 70 l/m2Ã—s, a breaking resistance in a longitudinal direction of the layer of greater than 20 N/15 mm strip width and in a transverse direction of more than 10 N/15 mm strip width.