Fibrous filtration face mask
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United States of America Patent
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Nov 7, 2006
Issued Date -
N/A
app pub date -
Jun 11, 1996
filing date -
Dec 20, 1990
priority date (Note) -
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Abstract
A face mask for filtering contaminants from the air. The face mask includes a harness for securing the mask over the nose and mouth of the wearer and a nonwoven fibrous layer attached to the harness. The nonwoven fibrous layer contains at least 40 weight percent thermally bonding fibers, where at least 10 weight percent of the fibers in the nonwoven fibrous layer are bicomponent fibers. The nonwoven fibrous layer is molded in a cup-shaped configuration and has a surface fuzz value of not less than 7.5 after being subjected to a surface fuzz abrasion test.
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