METHOD AND DEVICE FOR PRODUCING AN MFC FILM
A method of casting an MFC film on a substrate (52) comprises providing an MFC dispersion having a solids content of 2,5-25 % by weight, and a viscosity above 4 Pas at a shear rate of 20 s-1; exposing the MFC dispersion to a first shearing step (9), providing a shear rate of above 10 s-1; introducing the MFC dispersion into a film forming device (4), laterally distributing (41) the MFC dispersion; exposing the distributed MFC dispersion to a second shearing step (42), providing a shear rate of above 100 s-1; decelerating (43) the distributed MFC dispersion; exposing the MFC dispersion to a third shearing step (44), providing a shear rate of above 100 s-1; and simultaneously with, or subsequent to, the third shearing step (44), depositing the MFC dispersion on the substrate to form a wet MFC film on the substrate.