| 摘要 |
<p>Improved air filter medias and their use in filtration applications are disclosed. One filter media uses a substrate of all cellulose fibers corrugated with a non-phenolic resin requiring no post pleating cure, having a corrugation cycle of less than 6.3 cycles per inch and a corrugation height or depth of greater than 18 mils. Another media uses an all-cellulose corrugated media substrate having a corrugation cycle of less than 6.7 cycles per inch and a corrugation depth of greater than 18 mils. A fine fiber layer is deposited on the substrate base material for providing efficient filtration capture of submicron particles at the surface of the media. The fine fiber layer enhances the formation of dust cakes at the media surface and facilitates pulsed cleaning of the media. Filtration panels having pleated sheets of varied configurations, can be configured using the inventive media, which can be used in filter cartridges and applied in diverse filtration applications. The invention provides filtration panels meeting the BIA-C filtration standard for initial filtration efficiencies of 99.9 % on 0.2 to 2 micron dust particles, and may be treated with flame retardants.</p> |
