Method for manufacturing a film comprising highly refined cellulose fibers

A method for manufacturing a film comprising highly refined cellulose fibers in a paper-making machine, the method comprising the steps of

• a) providing an aqueous pulp suspension comprising at least 20%, by dry weight, of highly refined cellulose fibers having an SR (Schopper-Riegler) value in a range of 80-100 at a consistency in a range of 0.8-3 wt %
• b) deflocculating and diluting the aqueous pulp suspension to a lower consistency in a range of 0.1-1.5 wt % by injecting the aqueous pulp suspension into an aqueous stream using a high shear mixer to obtain a diluted aqueous pulp suspension;
• and
• c) feeding the diluted aqueous pulp suspension to a headbox of a paper-making machine;
• d) forming a wet web by applying the diluted pulp suspension from the headbox onto a moving wire;
• and
• e) dewatering the wet web to obtain a film comprising the highly refined cellulose fibers.