PROCESS TO PRODUCE MICROFIBRILLATED/NANOFIBRILLATED CELLULOSE BY IMPACTS
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United States of America Patent
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Issued Date -
Jun 8, 2023
app pub date -
May 11, 2021
filing date -
May 11, 2020
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Abstract
The present invention relates to a process to produce highly microfibrillated cellulose (MFC) and nanofibrillated cellulose (NFC). The invention also refers to a microfibrillated/nanofibrillated cellulose produced according to such process. The microfib-rillated/nanofibrillated cellulose is obtained by subjecting a cellulose fiber in a slurry of cellulose pulp to multiple mechanical impacts. The cycle may be repeated several times. Non-cutting bars disposed in a ring formation is the preferred configuration. At least two rings concentrically arranged facing each other in high rotation transmit the kinetic energy to the fibers to provide the highly defibrillated microfibrillated/nanofibrillated cellulose.
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