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1. (WO2018060868) A METHOD FOR THE PRODUCTION OF A FILM COMPRISING MICROFIBRILLATED CELLULOSE, A FILM AND A PAPER OR PAPERBOARD PRODUCT

Pub. No.:    WO/2018/060868    International Application No.:    PCT/IB2017/055880
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Thu Sep 28 01:59:59 CEST 2017
IPC: D21H 11/18
C08J 5/18
C08L 1/02
D21F 5/18
D21H 19/00
Applicants: STORA ENSO OYJ
Inventors: PIHKO, Riku
KUNNARI, Vesa
Title: A METHOD FOR THE PRODUCTION OF A FILM COMPRISING MICROFIBRILLATED CELLULOSE, A FILM AND A PAPER OR PAPERBOARD PRODUCT
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(H2O)/m2/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.