The present invention relates to a method of manufacturing a
cellulose product having a flat or non-flat product shape by a pressure moulding apparatus comprising a forming mould. The forming mould has a forming surface defining said product shape, The method comprises the steps of: arranging a
cellulose blank containing less than 45 weight percent water in said forming mould; heating said
cellulose blank to a forming temperature in the range of 100°C to 200°C; and pressing said cellulose blank by means of said forming mould with a
forming pressure acting on the cellulose blank across said forming surface, said
forming pressure being in the range of 1 MPa to 100 MPa.