Ultrasonic welding of wet laid nonwoven compositions
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United States of America Patent
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Sep 14, 2021
Grant Date -
Sep 24, 2020
app pub date -
Mar 10, 2020
filing date -
Mar 21, 2019
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Abstract
The present invention relates to ultrasonic welding of compositions, and wet laid articles made from the compositions, containing cellulose fibers and cellulose ester fibers, as well as wet laid processes using the compositions. More specifically, the present invention relates to a wet laid nonwoven comprising cellulose and cellulose ester fibers. The wet laid nonwoven is bonded to itself and/or to other substrates, and this bonding is accomplished at least in part by ultrasonic welding.
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