WET-LAID DUAL-LAYER AIR FILTRATION MEDIA INCLUDING A LARGE DIAMETER SYNTHETIC POLYMERIC FIBER IN A TOP LAYER THEREOF
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United States of America Patent
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N/A
Issued Date -
Dec 11, 2014
app pub date -
Jun 9, 2014
filing date -
Jun 10, 2013
priority date (Note) -
Abandoned
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Abstract
A wet-laid dual-layer air filtration media having a thin, lightweight top layer and a bottom layer is provided. The novel media includes a large diameter synthetic polymeric fiber in the top layer that deforms plastically and retains cohesion as a single object, while minimizing use of frangible components that become airborne upon handling. The novel media provides improved high dust holding capacity, while typically maintaining an overall lower basis weight than heretofore available media.
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