Microfibrillated film

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United States of America Patent

PATENT NO 10927504
APP PUB NO 20190234020A1
SERIAL NO

16312449

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Abstract

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A method of producing a microfibrillated cellulose (MFC) film comprising reinforcement fibers. The method includes: providing a suspension comprising a first MFC in an amount of at least 50 weight %, reinforcement fibers in an amount of at least 5 weight %, all percentages calculated on the total solid content of said suspension, and a formation aid; mixing said suspension to form a mixture; forming a fibrous web from the mixture; and dewatering and/or drying said fibrous web to form a film having a basis weight of less than 40 g/m2, a specific formation number of below 0.45 g0.5/m2, and an Oxygen Transmission Rate (OTR) value of below 100 ml/m2/per 24 hours, preferably of below 50 ml/m2per 24 hours at 50% relative humidity. Also, a film and use of the film in food or liquid packaging applications.

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Patent Owner(s)

Patent OwnerAddress
STORA ENSO OYJ00101 HELSINKI

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Backfolk, Kaj Villmanstrand, FI 127 614
Heiskanen, Isto Imatra, FI 141 831
Saukkonen, Esa Lappeenranta, FI 35 97

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