Abstract: The invention pertains to a process for manufacturing pieces of a foil having an inorganic coating comprising the steps of: (a) providing an etchable temporary substrate foil (1), (b) applying the inorganic coating (2) onto the temporary substrate, (c) applying a permanent carrier (3), (d) optionally, removing part of the temporary substrate (1), (e) cutting the foil along a cutting line into the pieces, wherein the cutting line is positioned at a portion of the foil where the temporary substrate is present and having a width of at least 0.25 mm relative to each side of the cutting line, (f) removing at least part of the temporary substrate.