PRODUCTION OF SHEETS COMPRISING FIBRILLATED CELLULOSE
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United States of America Patent
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Issued Date -
Aug 11, 2022
app pub date -
Mar 10, 2020
filing date -
May 17, 2019
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Abstract
There is provided a method of producing a sheet comprising fibrillated cellulose, comprising the steps of: a) providing chemically modified cellulose fibres in which a chargeable moiety has been introduced and the C2-C3 bond has been broken in at least part of the D-glucose units, wherein the charge density measured according to SCAN-CM 65:02 is 150-1500 μeq/g; b) forming a fibre web by dewatering a slurry comprising the modified cellulose fibres; and c) adding a base to the fibre web so as to obtain the sheet comprising fibrillated cellulose.
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