Dust filter bag containing nano non-woven tissue
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United States of America Patent
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May 28, 2002
Grant Date -
N/A
app pub date -
Apr 28, 2000
filing date -
Apr 30, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dust filter bag constituted of a plurality of layers including at least one carrier material and at least one non-woven tissue layer wherein the at least one non-woven tissue layer has a nano non-woven tissue with an average fiber diameter of 10 to 1000 mm, a basis weight of 0.05 to 2 g/m.sup.2 and an air permeability of 1500 to 20,000 l/m.sup.2.times.s, and the at least one carrier material layer and an air permeability of more than 70 l/m.sup.2.times.s, and a breaking resistance in the longitudinal direction of more than 20 N/15 mm strip width, and in the transverse direction of more than 10 N/15 mm strip width. The dust filter bag is suitable for use in vacuum cleaners for the efficient reduction of the finest dust, without the suction power of the vacuum cleaner being notably reduced.
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