Charged collector apparatus for the production of meltblown electrets
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United States of America Patent
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Jul 13, 1993
Grant Date -
N/A
app pub date -
May 14, 1991
filing date -
May 14, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus of the present invention employs a collector drum with an electrically charged surface for use in preparing electrically charged meltblown fibrous webs. The apparatus may be used as a primary charging system or, alternatively, with other charging system to enhance the charging of the web. The invention produces webs with exceptional filtration properties.
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Cited Art Landscape
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