Air cleaner element
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United States of America Patent
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N/A
Issued Date -
Jul 7, 2005
app pub date -
Aug 4, 2004
filing date -
Feb 8, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An air cleaner element is provided which is capable of improving a dust penetrating performance (that is, capable of reducing a penetrating amount of the dust, once captured, as an amount released from a filter member due to an air flow pulsation), while maintaining dust and carbon capturing performances of a density gradient type non-woven fabric. The filter member 1 of the air cleaner element includes a first filter layer 3 formed of a non-woven fabric, and a second filter layer 4 disposed on the downstream side of the first filter layer 3 with respect to an air flow direction, and formed of a non-woven fabric having a fine mesh structure in comparison with that of the first filter layer 3. The first filter layer 3 is impregnated with an oil. The second filter layer 4 has an oil repellent property.
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