Air filtration media and processes for manufacturing the same

摘要

Nonwoven filter media with an alpha value greater than about 13 generally includes a plurality of large diameter fibers, a plurality of ultrafine diameter fibers, and a binder. The large diameter fibers have an average diameter of greater than about 6 microns and make up more than about 60% by weight of the fiber web. The ultrafine diameter fibers have an average diameter of less than about 1 micron. Also disclosed is a method of manufacturing a filter media.

主权项

1. A non-woven filter media comprising:
a single layer consisting essentially of a blend of: a plurality of large diameter fibers having an average diameter of greater than about 6 microns and comprising greater than about 60% by weight of the fiber web; a plurality of ultrafine diameter fibers having an average diameter of less than about 1 micron; and a binder, wherein the filter media has an alpha value greater than 13 and is free of coarse fibers having a diameter of 1 to 4 microns.