Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Needled nonwoven fabric
Patent
1997-01-27
1999-03-02
Pezzuto, Helen L.
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Nonwoven fabric
Needled nonwoven fabric
442400, 442401, 442403, 442406, 442407, 442411, 442413, 442415, 442416, B32B 2700
Patent
active
058770992
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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