Filtration media and articles incorporating the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 27, 2001
Grant Date -
N/A
app pub date -
Jun 6, 2000
filing date -
Jul 22, 1999
priority date (Note) -
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Abstract
A durable meltblown filter material is provided comprising a first layer of fine polyester fibers having an average fiber diameter less than 8 micrometers and a second layer of polyester macrofibers having a significant number of fibers in excess of 12 micrometers. The macrofiber layer forms an open structure and the basis weight ratio of fine fiber layer to macrofiber layer can range from 2:1 to 10:1.
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