Flexible packaging films such as metalized films offer a robust solution for the packaging of various food and household products. Metalized films are coated with a thin layer of metal, generally aluminum. It can also be coated with copper, chromium, or nickel metal. The coating offers several attributes including glossy appearance, high barrier properties, low permeability, higher stiffness and excellent sealing strength. With low oxygen and air transmission rate, metalized film is an ideal product to preserve the food products for the longer period of time. Metalized film is a cost effective alternative packaging product for aluminum foil. It is very suitable for the packaging of food products which do not require ultra-high barrier properties. Also, the UV transmission rate is 5% which is too low when compared to PET films (91% transmittance). The metalized films can also be used for decoration and insulation applications. The corona treatment is used to enhance barrier & high-gloss properties and also to increase the adhesion on film surface before printing, laminating or coating on metalized films.
The prime driving factor for the growth of metalized films market is the rising need for efficient packaging solution for the food and pharmaceutical products which require high barrier properties from the surrounding environment. Metalized films are cost efficient and offer similar characteristics as that of aluminum foils. As a result, metalized films are replacing aluminum foils for the packaging of various easily affected products. This is the other factor which contributes to the expansion of metalized films market. When any food material is kept in metalized films for the longer period of time in contact with ultraviolet light, it may result in the emission of colors in food items. This can cause harmful effects on human health. This may hamper the growth of metalized films market. The latest innovations observed in this field of packaging is the use of plural metalized layers (each being different from others) to increase moisture-resistance properties of the film.
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