公开(公告)号：CA2970415A1

公开(公告)日：2016-06-23

申请号：CA2970415

申请日：2015-12-14

Applicant: STORA ENSO OYJ

Inventor： AULIN CHRISTIAN ,  AXRUP LARS ,  FLODBERG GORAN ,  HILLERGREN MAGNUS ,  LINDSTROM TOM ,  LJUNGQVIST CARL-HENRIK ,  STROM GORAN

IPC: D21H19/34 ,  B32B29/06 ,  B65D65/42 ,  D21H11/18 ,  D21H23/50 ,  D21H23/70 ,  D21H27/10 ,  D21H27/32

Abstract: The present invention relates to process for the production of a coated substrate comprising cellulosic fibres, the process comprising the steps of: i) providing a first substrate comprising cellulosic fibres and having a dry content of less than 50%; ii) applying a coating composition to the first substrate in an amount of more than 5 g/m2,,calculated as dry weight of the coating composition, wherein the coating composition comprises: - microfibrillated cellulose (MFC), and - optionally a water retention agent selected from carboxymethyl cellulose (CMC), anionic polyacrylamide (A-PAM),sodium polyacrylates, polyacrylic acid derivatives, guar gum, alginate, MFC prepared from carboxymethylated fibers, MFC prepared from oxidized fibers, MFC preparedby CMC- functionalised fibers, and/or combinations thereof; and iii) mechanically dewatering the first substrate. The present process provides an energy efficient coating process which can be performed online.