Check out some of the main properties of the most common materials (film on reel), which are used in the production of flexible packaging:
Polymer film (thermoplastic materials)
A wide selection of polymer films with a wide range of properties which can be transformed into a variety of shapes and sizes. Compared to other materials, plastic is very flexible, durable and cost-effective. This is the main reason why this material is among the most frequently used in the production of flexible packaging.
(Kraft) paper has high tensile strength, elasticity and a relatively good tearing resistance. It offers a certain measure of support and strength to the product. It is used for packaging products, such as multi-layered paper bags and bags (for cement, food, chemicals, flour, etc.) as well as bags for bakery products and other consumer packaged goods.
Metallised aluminium film is the best choice of packaging material to ensure a 100% barrier for protection against all types of gases, liquids (moisture) or light. It deflects infra-red rays in an excellent way. It is rarely used independently, as it breaks when folded. It provides a poor barrier against aromas and odours when used independently. This is why it is used in multi-layer structures along with polymer films or paper, which enables a significantly improved flexibility. It has numerous applications: caps for dairy products, e.g. yoghurt, flavoured drinks, cosmetics, foodstuffs, confectionery and ready-made dishes, soups, sauces, canned and liquid food, pharmaceuticals.
Cellulose and biodegradable materials
They effectively prevent the permeability of oxygen, fats and oils, but provide a weak barrier to liquids or moisture (without coatings or lamination). Cellulose and biodegradable films can be easily recycled, degraded and composted. The use of such materials has increased significantly in the recent years, especially in the food industry, especially for packaging bakery products, confectionery, fast food products and various snacks.