Filter media with enhanced stiffness and increased dust holding capacity
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Dec 12, 2002
app pub date -
Apr 30, 2002
filing date -
May 2, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A filter media having a high dust holding capacity and increased stiffness is provided. The filter media includes a middle filtering layer formed from at least one meltblown layer and having a dust entering side and a dust exiting side. A first outer layer is disposed on the dust entering side of the filter media and is formed from a meltblown polymer fiber web, and a second outer supporting layer, or backing, is disposed on the dust exiting side of the filter media, and is formed from a spunbond polymer fiber web and, optionally, a meltblown polymer fiber web. The filter media is particularly useful to form ASHRAE filters for applications including heating, refrigeration, and air conditioning filtration.
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