Metalized films (or metallised films) are polymer films coated with a thin layer of metal, usually aluminium. They offer the glossy metallic appearance of an aluminium foil at a reduced weight and cost. Metalized films are widely used for decorative purposes and food packaging, and also for specialty applications including insulation and electronics. == Manufacture == Metalization is performed using a physical vapor deposition process. Aluminium is the most common metal used for deposition, but other metals such as nickel or chromium are also used. The metal is heated and evaporated under vacuum...