Air filter with electrostatically active nonwoven liners and...

Details Air filter with electrostatically active nonwoven liners and... Air filter with electrostatically active nonwoven liners and...

B - Operations, Transporting

01

D

B01D 39/00 (2006.01) A47L 9/10 (2006.01) A47L 9/14 (2006.01) B01D 39/16 (2006.01) B01D 39/18 (2006.01) B01D 46/02 (2006.01) D04H 1/00 (2006.01) D21H 27/08 (2006.01)

Patent

CA 2383639

Disclosed is a multi-layer air filter including a filter layer which is covered on the raw gas side by a prefilter layer, which prefilter layer includes a dry laid electrostatically active nonwoven, preferably a staple fibre nonwoven with a surface weight of 10-100g/m2. The filter can be advantageously used as vacuum filter bag. The filter has an extended service life due to an improved separation efficiency combined with a reduced tendency of clogging.

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