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:
May. 03, 2022
Filed:
Mar. 30, 2017
Applicant:
Stora Enso Oyj, Helsinki, FI;
Inventors:
Kaj Backfolk, Villmanstrand, FI;
Isto Heiskanen, Imatra, FI;
Esa Saukkonen, Lappeenranta, FI;
Katja Lyytikäinen, Imatra, FI;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H 11/18 (2006.01); D21H 17/68 (2006.01); D21H 17/37 (2006.01); D21H 17/28 (2006.01); D21H 17/55 (2006.01); D21H 21/10 (2006.01); D21H 27/38 (2006.01); D21H 17/44 (2006.01); D21H 17/29 (2006.01); D21H 21/52 (2006.01); D21H 17/24 (2006.01); D21H 27/10 (2006.01); D21H 17/13 (2006.01); D21H 21/50 (2006.01); B82Y 30/00 (2011.01);
U.S. Cl.
CPC ...
D21H 11/18 (2013.01); D21H 17/13 (2013.01); D21H 17/24 (2013.01); D21H 17/28 (2013.01); D21H 17/29 (2013.01); D21H 17/375 (2013.01); D21H 17/44 (2013.01); D21H 17/55 (2013.01); D21H 17/68 (2013.01); D21H 21/10 (2013.01); D21H 21/50 (2013.01); D21H 21/52 (2013.01); D21H 27/10 (2013.01); D21H 27/38 (2013.01); B82Y 30/00 (2013.01);
Abstract
The present invention relates to a new process for improving dewatering when manufacturing a film comprising high amounts of microfibrillated cellulose (MFC) without negatively impacting the film properties. According to the present invention a high amount of nanoparticles is used as an additive, optionally together with a polymer.