Multilayer film comprising MFC

A method for manufacturing a multilayer film comprising microfibrillated cellulose (MFC) in a paper-making machine, the method comprising the steps of:

• a) forming a bottom web layer by applying a first pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR (Schopper-Riegler) value in a range of 18-75 on a bottom web wire;
• b) forming or applying an intermediate web layer formed from a second pulp suspension comprising at least 50% by dry weight of MFC having an SR value in a range of 80-100 on the bottom web layer;
• c) applying a top web layer formed from a third pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR value in a range of 18-75 on the intermediate web layer to form a multilayer web;
• and
• d) dewatering the formed multilayer web to obtain a multilayer film comprising MFC,
• wherein step b) comprises:
• b1) forming the intermediate web layer by applying the second pulp suspension on an intermediate web wire;
• b2) partially dewatering the intermediate web layer;
• and
• b3) applying the partially dewatered intermediate web layer to the bottom web layer.