Filter materials
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United States of America Patent
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Apr 14, 1998
Grant Date -
N/A
app pub date -
Feb 21, 1997
filing date -
Jun 20, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Cigarette filters which comprise hydroentangled lyocell staple fibers are disclosed. High filter efficiencies, good taste properties, good resistance to staining, good physical resilience and good air flow characteristics are observed when cigarettes containing such filters are smoked.
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