High stiffness nonwoven filter medium

作者: David Grant Midkiff , James Richard Neely

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摘要: A filter medium having high stiffness is provided. The a nonwoven web of conjugate fibers which has Frazier permeability above 200 CFM, an NaCl efficiency 75 percent, Gurley Stiffness 700 mg, and SEP value 80. may be polyolefin, more particularly polypropylene polyethylene in side-by-side configuration. made into by conventional means such as pleating. Such filters are useful HVAC systems transportation cabin air filtration.