▎ 摘　　要

NOVELTY - Method of producing a nanocellulose film, comprises (a) applying a nanocellulose dispersion on a surface of a substrate to form a layer, and (b) drying the layer on the surface of the substrate to form a film, where the substrate comprises a fibrous substrate coated with a hydrophobic release layer on its surface. USE - The method is used for producing a nanocellulose film used: as a barrier packaging film, preferably for gas, aroma and/or grease protection; in printed electronics, e.g. in colorimetry' sensors, in transparent and conductive electrodes, e.g. using silver nanowires, for touch screen panels, strain sensors, for example in combinations of nanocellulose and graphene; in transparent flexible display, such as organic LEDs printed on nanocellulose; for energy storage, in ionomer membranes for fuel cells, in antireflection coatings for solar cells; in water treatment; in tissue engineering; in wound healing patches; in drug delivery; in substrates for Raman scattering spectroscopy; or in transparent fire-resistant films, such as in films comprising nanocellulose and silicates. The nanocellulose film is used for multilayered laminate structure (all claimed). The nanocellulose films are preferably free-standing nanocellulose films. The laminate is used for the nanocellulose films as labels or self-adhesive films. The nanocellulose film is used for wound healing applications. The dried film is used in barrier packaging films, to provide gas, aroma and grease protection and their combinations. The nanocellulose film is used in solar cells, used as light diffuser films, e.g. in lighting applications, due to, i.e., their high temperature tolerance. The film is used in food packaging. ADVANTAGE - The method solves time consuming, small throughput, and very expensive to produce the films. The nanocellulose film is rapidly produced in large quantities, and is inexpensive to produce such films than by conventional processes. The nanocellulose film has excellent mechanical properties, such as strength, and has high haze, and allows for the manufacture of low-haze films. The nanocellulose film is useful in improving the efficiency of solar cells, and is thermally stable up to 250 degrees C, and exhibits excellent barrier against grease, oils, such as vegetable oils and mineral oils, and gases (especially oxygen). The nanocellulose film makes it 100% biodegradable and is fully biocompatible, and excellent barrier properties with their biodegradability make them suitable for replacing non-biodegradable plastic packaging. The nanocellulose films is produced by adding e.g. silver nanowires, similar in performance to indium tin oxide glass which is currently used as electrodes in displays and solar cells. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a multilayered laminate structure comprising a substrate layer having two opposite surfaces, the substrate layer being provided on one surface with a first layer of a hydrophobic material and on a second, opposite surface, with a second layer of a hydrophobic material, and further comprising a nanocellulose film layer deposited on the first layer of the hydrophobic material and, on the opposite surface, a glue layer deposited on the second layer of the hydrophobic material.