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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11162222 B1

PDFFull Text
Date of Patent:
Nov. 02, 2021

Filed:

Apr. 11, 2018

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

Applicant:

Stora Enso Oyj, Helsinki, FI;

Inventors:

Cecilia Land Hensdal, Forshaga, SE;

Adrianna Svensson, Karlstad, SE;

Liv Bergqvist, Skoghall, SE;

Amy Tran Carlström, Västerås, SE;

Lars Axrup, Hammarö, SE;

Assignee:

Stora Enso OYJ, Helsinki, FI;

Attorney:

Greer, Burns & Crain, Ltd.

Primary Examiner:

Sheeba Ahmed

Int. Cl.
CPC ...
B32B 5/06 (2006.01); B32B 23/06 (2006.01); B32B 23/08 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 27/34 (2006.01); B32B 27/08 (2006.01); B32B 27/10 (2006.01); C08B 15/02 (2006.01); B82Y 30/00 (2011.01); C08L 1/02 (2006.01); C08J 5/18 (2006.01); D21H 19/34 (2006.01); D21H 27/10 (2006.01); D21H 11/18 (2006.01); D21H 27/30 (2006.01); D21H 11/20 (2006.01); B32B 23/04 (2006.01); B32B 27/30 (2006.01); C08J 7/048 (2020.01); C08J 7/052 (2020.01);
U.S. Cl.
CPC ...
D21H 11/18 (2013.01); B32B 5/06 (2013.01); B32B 23/042 (2013.01); B32B 23/06 (2013.01); B32B 23/08 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); C08J 7/048 (2020.01); C08J 7/052 (2020.01); B32B 2307/7244 (2013.01); B32B 2307/7246 (2013.01); B32B 2439/00 (2013.01); C08L 2201/14 (2013.01); C08L 2203/16 (2013.01); C08L 2205/025 (2013.01);
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.

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