Method for making a film comprising MFC
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United States of America Patent
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Oct 4, 2022
Grant Date -
Sep 12, 2019
app pub date -
Nov 16, 2017
filing date -
Nov 18, 2016
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Abstract
Method for making a film that comprises microfibrillated cellulose, wherein the film has low OTR values and especially suitable for a tropical environment. The method comprising the steps of providing a suspension comprising microfibrillated cellulose (MFC), forming a film from said suspension, wherein the film having a solid content above 40%, preferably above 50%, treating the film with flame or plasma treatment, such that a surface activation takes place on the film, and cooling the film, wherein the surface of the film having a decreased OTR value and a high moisture resistance.
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