Food films are an essential component in the process of preserving and safeguarding a wide variety of foods over the course of their storage and transportation. In light of the fact that there is a vast selection of options available on the market, it is essential to have a solid understanding of the many kinds of films alimentaires, as well as their individual capabilities and applications. The purpose of this page is to provide a detailed examination of the numerous varieties of food films, focusing on the characteristics, benefits, and uses of each type.
Polymerized Films
Because of their adaptability, low cost, and user-friendliness, plastic films are the form of food film that is utilised the most frequently. Polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC) are some of the types of plastic films that are accessible. However, there are also more types of plastic films. The qualities and functionalities of each type are diverse from one another.
Films made of polyethylene (PE)
PE films are utilised extensively for the purpose of storing and packaging a broad variety of meals. Their resistance to moisture is exceptional, and they are suited for use with both frozen and refrigerated varieties of items. Films made of polyethylene (PE) can be classified into three distinct categories: low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and high-density polyethylene (HDPE). Each of these categories possesses varying degrees of flexibility and strength.
Films made of polypropylene (PP)
PP films are well-known for their exceptional clarity and their ability to withstand high temperatures. One of the most typical applications for them is in the packaging of dry goods, confectioneries, and snacks. The freshness and quality of the products that are wrapped are preserved because to the superior moisture and vapour barriers that are provided by PP films.
Plastic films made of polyvinyl chloride (PVC)
PVC films are good for packaging perishable items such as fruits, vegetables, and meats because of their exceptional clarity and flexibility. PVC films, on the other hand, have been the subject of worries due to the possibility of plasticizers making their way into food, and the use of these films is gradually being phased out in certain countries.
Foil made of aluminium
The outstanding barrier characteristics that aluminium foil possesses against oxygen, light, and moisture have made it a popular choice for use in the packaging of food products. It is frequently utilised for the purpose of wrapping perishable foods, including meats, dairy products, and baked goods, among other things. The exceptional heat resistance of aluminium foil makes it an ideal material for cooking, grilling, and reheating food items after they have been cooked. Acidic or salty foods, on the other hand, are not recommended for use with this method since they have the potential to cause the foil to corrode and alter the flavour of the dish.
Naturally Occurring Films
In recent years, there has been a growing demand for food films that are made from natural ingredients. This need has been driven by concerns about the environment as well as consumer preferences for environmentally friendly packaging solutions. Biodegradability and compostability are two distinguishing characteristics of these films, which are often created from renewable resources.
Cellulose Films
Cellulose films, which are commonly referred to as cellophane, are produced from plant-based materials such as cotton or wood pulp. Good breathability is provided by them, which enables the wrapped food to keep its freshness while preventing the loss of moisture. One of the most prevalent applications for cellulose films is in the packaging of bread products, fruits, and sandwiches.
Wraps made of beeswax
Beeswax wraps have become more popular as an alternative to conventional food films that are both reusable and good to the environment. Beeswax, jojoba oil, and tree resin are combined with cotton fabric to create these products, which are then infused with the mixture. Wrapping foods like fruits, veggies, cheese, and sandwiches with beeswax wraps, which have a natural antibacterial effect, is a great way to express your creativity. On the other hand, they are not appropriate for wrapping in raw meat or things that are hot.
Films with a Specialisation
In addition to the main sorts of food films that were discussed earlier, there are also different kinds of food films that are made specifically for certain purposes and kinds of food.
Anti-Fog Films
Anti-fog films are utilised in the packaging industries for the purpose of preventing the formation of condensation and preserving the clarity of the product’s appearance. The packaging of salad greens, berries, and cut fruits is a commonplace application for these containers.
High-Barrier Films: High-barrier films, which include metallized films and laminated films, offer outstanding oxygen and moisture barriers, thereby extending the shelf life of food products that are sensitive to oxygen and moisture, such as coffee, snacks, and dehydrated meals.
In conclusion, the market provides a vast selection of food films, each of which has its own distinct capabilities and applications. The adaptability and cost-effectiveness of plastic films, such as polyethylene, polypropylene, and polyvinyl chloride films, are two of its most notable characteristics. The barrier characteristics and heat resistance of aluminium foil are among the best in the industry. There is an increasing demand for environmentally friendly packaging choices, and natural-based films, such as cellulose films and beeswax wraps, are able to meet this demand. When it comes to packaging fresh produce and other sensitive food goods, specialised films, such as anti-fog films and high-barrier films, are used to meet specific criteria. The ability to make educated decisions regarding the selection of the most appropriate alternative for certain food packaging requirements is made possible by having a thorough understanding of the properties and applications of the various types of food films.
