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.:
Date of Patent:
Aug. 31, 2021
Filed:
Sep. 27, 2017
Applicant:
Stora Enso Oyj, Helsinki, FI;
Inventors:
Riku Pihko, Jyväskylä, FI;
Vesa Kunnari, Tuusula, FI;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 11/18 (2006.01); D21F 5/00 (2006.01); D21F 5/18 (2006.01); D21H 19/00 (2006.01); C08L 1/02 (2006.01); C08J 5/18 (2006.01); C08B 15/02 (2006.01);
U.S. Cl.
CPC ...
D21H 11/18 (2013.01); C08B 15/02 (2013.01); C08J 5/18 (2013.01); C08L 1/02 (2013.01); D21F 5/004 (2013.01); D21F 5/18 (2013.01); D21H 19/00 (2013.01); B32B 2307/7244 (2013.01); C08J 2301/02 (2013.01);
Abstract
The present invention relates to a method for the production of a film comprising microfibrillated cellulose, wherein the method comprises the steps of; providing a suspension comprising between 70 weight-% to 100 weight-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension, drying the web in a drying equipment wherein the web is at least partly dried at a drying rate above 75 kg(HO)/m/h by use of hot air whereby a film is formed. The invention also relates to a film produce according to the method and a paper or paperboard substrate comprising said film.