Q. Can you explain Metallized films?

In metallized films, plastic films such as those of polyester, polyamide and polypropylene are coated with aluminium to enhance the barrier properties towards the passage of water vapour, gaseous volatile ingredients, light, odours and microorganisms. Metallized polyester film is a polyester film with a vacuum deposition of aluminium on one side. It is ideal for a variety of packaging end uses such as processed meat packaging, fish packaging and the packaging of snacks, candy and nuts. Metallized film is less expensive and more flexible than foil laminates which have similar barrier properties and is therefore suitable for high speed filling on form-fill-seal equipment.