公开(公告)号：US10145068B2

公开(公告)日：2018-12-04

申请号：US15307485

申请日：2015-04-29

Applicant: Stora Enso OYJ

Inventor： Hallgren Hans ,  Frank Peng ,  Anders Moberg ,  Hans Höglund ,  Gunilla Pettersson ,  Sven Norgren

IPC: D21F3/02 ,  D21H11/08 ,  D21H11/10 ,  D21H17/26 ,  D21H17/29 ,  D21H21/18

Abstract: The present invention relates to a process for producing at least one ply of a paper or board product wherein a web comprising mechanical and/or chemimechanical pulp and at least one dry strength additive is dried in a press drying process by subjecting the web to heat and an overpressure of above 40 kPa. The present invention also relates to a paper product, a paperboard product and a ply produced according to the process.