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The main objective of film in the food industry is to protect food from external agents that can compromise its quality. These include moisture, light and oxygen. It helps to extend the shelf life of food products by preventing spoilage and contamination. The printed design on the film can also be used to provide important information to the consumer, such as nutritional information, cooking instructions and product branding. In addition, printed foil can help to increase the visual appeal of the product, making it more attractive to consumers. This can be particularly important for products sold in the retail sector, where packaging plays a key role in attracting customers.
The type of film used in the food industry depends on a number of factors, including the type of food being packaged, the required sealing properties and printing requirements. Some commonly used flexo printed films for the food industry are presented below:
Polyethylene (PE) film: PE film is a popular choice for food packaging due to its excellent sealing properties against water and oxygen. It is used for a wide range of food products including snacks, frozen foods and fresh produce.
Polypropylene (PP) film: PP film is a transparent, flexible film used for packaging a variety of foods such as sweets and confectionery, bakery products and snack foods. It has good moisture and oxygen barrier properties and is puncture and tear resistant.
Polyester (PET) film: PET film is a high strength transparent film used for packaging applications where high barrier properties are required, such as for meat, cheese and other perishable foods.
It is important to note that the type of printed film used for food packaging depends on the specific food product being packaged and the desired packaging requirements such as shelf life, barrier properties and overall package design.