Filter material for filter element, comprises filtration layer containing calendered melt-blown nonwoven fabric and having specified air permeability, and carrier layer containing wet-nonwoven fabric, dry-staple nonwoven fabric or mesh

摘要

A filter material comprises a filtration layer containing calendered melt-blown nonwoven fabric and having an air permeability of 2-100 l/m 2> second, and a carrier layer containing a wet-nonwoven fabric, a dry-staple nonwoven fabric, a spun-bonded nonwoven or a mesh.