Nonwoven laminate barrier material
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United States of America Patent
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Oct 13, 1998
Issued Date -
N/A
app pub date -
Nov 6, 1996
filing date -
Dec 30, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A nonwoven web laminate having improved particulate barrier properties, and particularly improved particulate barrier properties for particles in the size range of between 0.19 microns and 0.5 microns, is provided. The particulate barrier properties are improved by subjecting one or more of the layers forming the nonwoven web laminate to corona discharge. The improved particulate barrier properties are further achieved without substantially altering or increasing the amount of surface charge on the nonwoven web laminate.
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