Air filter medium including re loft span bond web, and its manufacturing method and method

摘要

A re lofting span bond nonwoven web that exhibits less than 8.0% to at least 3.0% solicities and exhibits at least 0.30 quality factors is disclosed. A method of manufacturing a re loft web and a method of using a recloft web as an air filtration web, for example, as a layer of filter media or filter media.