Layered air filter medium having improved efficiency and pleatability
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United States of America Patent
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Apr 26, 1994
Issued Date -
N/A
app pub date -
Aug 25, 1993
filing date -
Jul 7, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is directed at a filter and method for making the filter. The filter has a first filter layer of high efficiency melt blown filter medium having an efficiency of pre-HEPA to HEPA, and a second filter layer of cellulose support medium by which the first filter layer is supported. The filter is pleated, and a plurality of dimples for separating a plurality of pleats can be fabricated on the pleat tips.
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Cited Art Landscape
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