HYDROENTANGLED LIQUID FILTER MEDIA AND METHOD OF MANIFACTURE

摘要

A filter media comprising hydroentangled predominant polyester staple length fibers having a basis weight of no more than about 12 oz/yd<2>, an air permeability of at least about 180 cfm, and machine-direction and cross-direction shrinkage of less than about 3%, exhibiting greater than about 85% capture efficiency with particle sizes in the range of about 30 to 40 microns, and exhibiting greater than about 60% capture efficiency with particle sizes I the range of 20 to 30 microns.