Fine fiber media layer
AssigneeDonaldson Company, Inc.
InventorsHoo Y. Chung, John R.B. Hall, Mark A. Gogins, Douglas G. Crofoot, Thomas M. Weik
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Abstract
Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.
Claims12
A filter media comprising a fine fiber layer and a filtration substrate layer, the substrate layer comprising fiber comprising a cellulosic fiber or a synthetic polymer, the substrate having a thickness of 25 to 800 microns and a basis weight of about 8 to 200 gm-m−2, the fine fiber layer having a thickness no greater than 30 microns and a basis weight of about 0.5 to 50 g-m−2, the fine fiber comprising a fiber size of about 0.01 to 2 micron.
Dependencies are inferred from the claim text.