Metallized Films
Metallized films are based on aluminum attached to a flexible plastic film. These films have one side metallized and one side sealable. Metallized films are designed to reflect the light where one needs to control thrip and other pests that carry disease. Along with this role of keeping away the pest, metallized films will support combustion if ignited.
Metallized films use vacuum sputtering techniques to coat a dielectric film with a metal composition. They also tend to be self-healing, in that a high voltage arc will vaporize the metal deposit but will be contained by the dielectric, such that the damage remains localized. Metallized films are made of neutral tones, therefore when anyone looking through these films, gets true color perception. They offer higher heat rejection figures. Also metallized films do not fade or discolor with time.
Manufacturing of Metallized Films
To make metallized films, film is first drawn through a vacuum chamber with a hot metal ingot. An electromagnetic field directs streams of ions toward the metal as the heat causes the metal to give up particles, which then migrate onto the film’s surface. The result is a reflective layer with very little mirror effect. Finally an ultra clear polymer layer is laminated on that and the hard coating of materials like acrylic is applied. This finally gives out the quality metallized films.
Metallized films can be of various metals including aluminum, chromium, or a combination of nickel and chromium. Metallized films are available in two version, Metallized polypropylene film and Metallized polyester film.
Aluminum Metalized Film
These metallized films has highly consistent optical density. It acts as a barrier to moisture and light, with superior heat sealing properties. These metallized films are highly craze and crack resistant.
Nickel-Chromium Metallized Films
Nickel-Chromium Films films does not contain any dyes that can fade or turn purple. These are clean looking neutral color films that are virtually invisible, blending well with all exterior and interior color schemes. They are extremely durable and are resistant to fading, cracking, peeling, delaminating and discoloration.
Metallized Plastic Films
In the category of metallized plastic films metallized polyester films, ultra clear metallized films, metallized CPP films and metallized BOPP films are covered. The metallized plastic films differ in optical density and microns. Metallized plastic films are used as barrier to moisture, gases, light etc.
Metallized Polyester Film
Metallized polyester film is used for making flexible lamination and holograms. Even these metallized polyester films are also used to do the quick twist wrap for candies. For the uniform coating and consistent weight these metallized films are produced through micro slitting process.
Metallized Films Applications
Metallized films are used for extrusion and adhesive laminations. Recommended for most moisture and light sensitive products, such as salty snacks, fruits, candy, and baked goods. Metallized films can also be used as aluminum foil replacement in three-ply laminations cold seal coated. They are widely used for food packaging. Some of the packaging products made out of metalized films are as follows:
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