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United States of America Patent
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Mar 2, 1999
Issued Date -
N/A
app pub date -
Jan 27, 1997
filing date -
May 25, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A web, formed from dielectric fibers and non-dielectric fibers, which has been subjected to corona discharge to improve the particulate filtration properties of the web is provided. The dielectric and non-dielectric fibers may be intermingled within the web such that the distribution of the dielectric and non-dielectric fibers within the web is generally uniform. In one embodiment, the dielectric fibers may be formed from a thermoplastic polymer, and particularly polyolefin and the non-dielectric fibers may be formed from cellulose, and particularly wood pulp.
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