Patent · US Active

Barrier film comprising microfibrillated cellulose and microfibrillated dialdehyde cellulose and a method for manufacturing the barrier film

US11162222B2 · kind B2 · utility

0Cited by

0References

16Claims

0Family size

Assignee

Stora Enso OYJ · FI

Inventors

Cecilia Land Hensdal · Forshaga, SE
Adrianna Svensson · Karlstad, SE
Liv Bergqvist · Skoghall, SE
Amy Tran Carlström · Västerås, SE
Lars Axrup · Fållan, SE

Key dates

Filing date	Apr 11, 2018
Grant date	Nov 2, 2021
Priority date	—
Expiry date	Aug 18, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/025
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to a method for manufacturing at least one layer of a film wherein the method comprises the steps of; providing a first suspension comprising microfibrillated cellulose, providing a second suspension comprising microfibrillated dialdehyde cellulose, mixing the first suspension with the second suspension to form a mixture, applying said mixture to a substrate to form a fibrous web and drying said web to form at least one layer of said film. The present invention further relates to a film comprising said at least one layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.