METALLISED FILM
Metallisation typically involves the application of a thin layer of aluminium to a
film substrate. The process takes place inside a chamber, where heated
aluminium is evaporated onto the film as it is unwound and then rewound at
high speed in a vacuum. The result is a film that is not only visually more attractive but also
considerably more resistant to oxygen and water vapour transmission.
Metallised film is used in a wide variety of food packaging applications
where either high barrier or striking appearance is required for example in
crisp packing (BOPP), bread wrap (PE) or sweets (CPP). The process is
also used for metallising BOPET for capacitors.