Functional films give products more special functions and meet the diverse needs of different industries.
VMCPP film, i.e. aluminized cast polypropylene film, greatly improves the barrier properties of the film by coating a layer of aluminum with a thickness of about 30-50 nanometers on the surface of CPP film. For products that require high barrier properties, such as medicines and tea, VMCPP film can effectively block oxygen, water vapor and odor. In drug packaging, it can prevent drugs from getting damp and deteriorating, ensuring that the efficacy of drugs is stable within the validity period; in tea packaging, it can maintain the aroma and flavor of tea for a long time, allowing consumers to taste the fresh tea fragrance at any time.
VMPET film, also known as aluminized polyester film, also has excellent barrier properties and good mechanical properties. Its tensile strength can reach more than 150MPa, with high gloss and good printing adaptability. It is widely used in high-end food and cosmetic packaging. For example, in chocolate packaging, VMPET film can not only keep chocolate fresh, but also enhance the attractiveness of the product through exquisite printing; in cosmetic packaging, it can perfectly show the exquisite appearance of cosmetics and enhance the grade of the product.
PVDC film, polyvinylidene chloride film, has extremely high barrier properties and is the best barrier to water vapor and oxygen among all plastic films. Its oxygen permeability is as low as 0.5cm³/(m²・24h・0.1MPa). In the packaging of perishable foods such as meat and cheese, PVDC film can effectively inhibit bacterial growth, extend the shelf life of food, and allow consumers to buy fresher food. For example, many vacuum-packed meat products commonly seen in supermarkets use PVDC film.
