Low pressure drop filter medium

Details Low pressure drop filter medium Low pressure drop filter medium

B - Operations, Transporting

01

D

183/109

B01D 46/10 (2006.01) B01D 39/16 (2006.01)

Patent

CA 1044615

Abstract A new filter medium, which can remove a high per- centage of fine particles from a gas stream while causing a relatively low pressure drop in the gas stream, comprises a base porous web, one or more lightweight non-self-supporting layers of microfibers collected and carried on the base porous web, and a top porous web. A new aerosol filter apparatus incorporates the new filter medium to provide economical con- sistent filtering of air in a home-office, or industrial en- vironment. In this new filter apparatus, a web of the filter medium extends from a supply roll across a stream of the air being cleaned to a take-up roll; and the filter medium is advanced from the supply roll to the take-up roll to gradu- ally provide a fresh length of filter medium in the air stream.

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