Glue-bonded multi-ply absorbent sheet and polyvinyl alcohol ply bonding adhesive
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United States of America Patent
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Mar 23, 2021
Grant Date -
Aug 16, 2018
app pub date -
Apr 12, 2018
filing date -
Jan 28, 2015
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Abstract
A multi-ply absorbent sheet includes a first absorbent ply of cellulosic sheet; a second absorbent ply of cellulosic sheet; and a ply bonding adhesive interposed between the first absorbent ply and the second absorbent ply, the ply-bonding adhesive thereby adhering said absorbent plies together. The ply-bonding adhesive comprises polyvinyl alcohol and nanofibrillated cellulose. In a particularly preferred embodiment the adhesive is applied as a dilute aqueous composition to tissue plies and the nanofibrillated cellulose has a Characteristic Breaking Length of 6.5 km or above.
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