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:
Jun. 05, 2018
Filed:
Jun. 11, 2015
Applicant:
Stora Enso Oyj, Helsinki, FI;
Inventors:
Jari Räsänen, Imatra, FI;
Janne Pynnönen, Lempäälä, FI;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 27/30 (2006.01); B32B 29/00 (2006.01); D21C 9/00 (2006.01); D21H 11/16 (2006.01); D21H 27/10 (2006.01);
U.S. Cl.
CPC ...
D21H 27/30 (2013.01); B32B 29/005 (2013.01); D21C 9/00 (2013.01); D21C 9/007 (2013.01); D21H 11/16 (2013.01); D21H 27/10 (2013.01); B32B 2250/26 (2013.01); B32B 2307/73 (2013.01);
Abstract
The present invention relates to a process for producing at least one ply of a paper or paperboard product which process comprises the steps of; subjecting cellulosic fibers to heat treatment wherein the fibers are treated at a high dry content and at an increased temperature, preparing a slurry comprising said heat treated fibers, forming a web of said slurry and, dewatering said web whereby a ply of said product is formed. The present invention further relates to a paper or paperboard product produced according to the process.