Food packaging is crucial for food safety and quality maintenance. Different films play different roles in food packaging.
OPS food packaging film is suitable for packaging various baked goods with its high transparency and good barrier properties. For example, bread can be packaged with this film to allow consumers to clearly see the color and fluffy texture of the bread, while preventing water loss, so that the bread can maintain a soft taste within 2-3 days; for cakes, it can prevent the surface of the cake from being contaminated with dust and odor, and maintain its original sweet taste.
CPP film is widely used in food packaging, especially for some oily foods, such as potato chips. Its oil resistance and moisture resistance can prevent oil from seeping out, maintain the integrity of the packaging and the taste of the product. Experiments show that potato chips packaged with CPP film, when placed at room temperature for one month, the oil content only drops by about 2%, which can well maintain the crisp taste of potato chips.
POF film is often used for collective packaging of small-packaged foods due to its good shrinkage performance and environmental friendliness, such as the combined packaging of multiple packages of candy and biscuits. It can wrap multiple small packages tightly together for easy carrying, and the appearance after shrinkage is neat and beautiful, which increases the attractiveness of the product. For example, common family-sized biscuits are often packaged with POF film.
VMCPP film and VMPET film are very popular in high-end food packaging, such as nuts and coffee. Their high barrier properties can effectively protect the flavor and nutrients of food while improving the grade of the product. In nut packaging, it can prevent nuts from oxidation and deterioration, maintaining their crispy taste; in coffee packaging, it can block oxygen and moisture, maintaining the rich aroma of coffee.
PVDC film occupies an important position in meat packaging. It can fit closely to the surface of meat to prevent blood and water from seeping out, while inhibiting the growth of microorganisms and extending the shelf life of meat. For example, pork packaged with PVDC film can extend the shelf life by 3-5 days compared with ordinary packaging under refrigerated conditions.
