MASK FILTER AND METHOD OF MANUFACTURING THE SAME, AND PARTICLE-TRAPPING MASK
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United States of America Patent
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Issued Date -
Jun 20, 2013
app pub date -
Aug 3, 2011
filing date -
Aug 24, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An aspect of the present invention relates to a mask filter, wherein wet nonwoven fabric comprised of synthetic fiber is folded up into a concentric circular pleat form, and the synthetic fiber comprises 10 to 50 mass percent of short fiber A having a fiber length ranging from 0.1 to 1 mm and a fiber diameter ranging from 100 to 1,000 nm, and further comprises binder fiber B having a fiber length ranging from 5 to 10 mm and a fiber diameter ranging from 6 to 15 μm, and fiber C of greater fiber length and fiber diameter than short fiber A and smaller fiber length and fiber diameter than binder fiber B.
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