Introduction to metallized polyester films

Introduction To Metallized Polyester Films

Polyester Films

Polyester films are made from the petroleum substances that are key constituents of polyesters. Polyester films find a multitude of uses across various industries owing to their innate properties and advantages. The industries that majorly use polyester films are electronics industry and the packaging industry. Packaging industry happens to be the major user of the the polyester films. Due to their multiple properties of , attractive appearance, strong oxygen barrier, brilliant printing and sealing capabilities and machinability, they are preferred films for food products packaging.

Metallized Films

Before talking about metalized polyester films, let’s understand what is meant by metallized films in general. Metallized films refer to films that are metalized on one end sealable on the other. Metallized films may be made of a variety of metals like aluminium, chromium and a combination of nickel and chromium. Their main uses are packaging in food, pharmaceuticals and the beauty industry. It is used to make a different forms of wraps like foils, sheets and scarps. The two types of metallized films are metallized polypropylene films and metallized polyester films.

Metallized Polyester Films

Metallized polyester films are metallized under high vacuum condition in order to achieve certain desired properties like a metallic look, making it resistant to gases, and less diffusive with respect to aroma and flavor. The other advantageous properties of the metallized polyester films are that they can be shrunk with heat application, can be molded into different forms as per the need, are printable, sealable and capable of lamination and extrusion also. All these properties of metallized polyester films make them the perfect choice for making aluminium foils used for packaging food items as they need to be resistant to outer gases, but at the same time need to retain the aroma and the flavor of the food.

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