Transparent PET film coated with high-barrier EVOH
Transparent PET film coated with high-barrier EVOH is a packaging material with excellent performance, and is described in detail below:
Material composition
PET film: Polyethylene terephthalate film with good mechanical strength, transparency, gloss, dimensional stability and chemical stability, and non-toxic, hygienic, widely used in packaging, electronics, optics and other fields.
- top leader plastic
- China
- 16 business days
- 1900 tons/month
- Information
EVOH coating: ethylene vinyl alcohol copolymer, the hydroxyl group in its molecular structure and intermolecular hydrogen bonding have strong bonding, strong cohesion, high degree of molecular chain stacking, the diffusion coefficient of gases in which is small, with excellent gas barrier properties, can effectively block the penetration of oxygen, carbon dioxide and other gases.
Performance Characteristics
High barrier property: The barrier property of EVOH depends on the content of ethylene, generally the gas barrier property decreases when the content of ethylene increases, but it is easy to process. Transparent PET film coated with EVOH has a very low permeability to oxygen, water vapor, etc., which can effectively extend the shelf life of the packaged goods, for example, in food packaging, it can prevent food from oxidative deterioration and softening by moisture.
Good transparency: PET film itself has high transparency, EVOH coating also has good transparency, so the film can still maintain good transparency after lamination, which can make the goods inside the package clearly visible and convenient for display and sale.
Excellent mechanical properties: PET film gives the composite film high tensile strength, tear strength and abrasion resistance, so that it is not easy to be damaged during packaging, transportation and storage, and can withstand a certain degree of external force and friction.
Good chemical stability: it has good resistance to most chemicals and can resist the erosion of acids, alkalis, oils and greases, etc. It can be used to package items containing these ingredients.
Good processing performance: it can be heat-sealed, printed, coated, laminated and other processing techniques, which is convenient to be made into various forms of packaging products, such as bags, boxes, bottles and stickers, to meet different packaging needs.
Application Fields
Food packaging: used for packaging meat, seafood, dairy products, fruit juices, sauces, baked goods, etc., can effectively block oxygen and moisture, maintain the freshness of food, flavor and nutrients, and extend the shelf life.
Pharmaceutical Packaging: It can be used as materials for pharmaceutical blister packaging, pharmaceutical bottle labeling, etc. It can prevent moisture, oxidation and deterioration of pharmaceuticals and ensure the quality and safety of pharmaceuticals.
Cosmetic packaging: used for packaging lotion, cream, perfume, lipstick and other cosmetics, not only can block the outside air and moisture, but also show the appearance of the product, enhance the product grade and attractiveness.
Electronic packaging: packaging of electronic components, circuit boards, etc., can prevent dust, moisture and oxygen erosion of electronic components, to protect the performance and stability of electronic equipment.
Other fields: It can also be applied to the packaging of daily necessities, industrial products, agricultural products, etc., such as the packaging materials for detergents, pesticides and seeds.
Production process
Co-extrusion method: PET resin and EVOH resin are added into different extruders, and after heating and melting, they are extruded through the co-extrusion die, so that the EVOH layer is evenly covered on the surface of PET film. This method has high production efficiency and good composite strength of the film.
