Physical Properties:
High Mechanical Strength: PVC film possesses excellent tensile and tear strength, making it more resistant to tension and impact compared to some films such as polyethylene (PE). This makes it excellent in applications requiring high strength, such as waterproof membranes in building materials and greenhouse films in agriculture, allowing it to maintain its integrity over long periods and resist erosion from wind, sun, and rain.
Good Flexibility: While maintaining high strength, PVC film also boasts excellent flexibility, retaining its suppleness under varying temperature conditions and resisting brittleness. Compared to polypropylene (PP) films, PVC film exhibits a more pronounced flexibility advantage at low temperatures, making it suitable for applications requiring high material flexibility, such as packaging irregularly shaped items in the packaging industry and lamination applications in clothing and leather goods.
Chemical Properties:
Strong Chemical Resistance: PVC film exhibits good resistance to acids, alkalis, salts, and other chemicals, and is not easily damaged by chemical reactions. In the packaging of some chemical products, the protection of chemical laboratories, and the anti-corrosion coating of industrial buildings, PVC film provides excellent protection. Compared to polystyrene (PS) film, which is easily corroded by chemicals, it has a longer service life and more stable performance.
Low air and moisture permeability: PVC film has low gas and water vapor permeability, effectively blocking the penetration of gases such as oxygen and carbon dioxide, as well as moisture. In the food packaging industry, this characteristic can effectively extend the shelf life of food and prevent spoilage due to oxidation and moisture. In electronic device packaging, it can also protect electronic products from the effects of humid air, preventing problems such as short circuits. Compared to PE film, which has better air permeability, it has significant advantages in moisture protection and preservation.
Processing performance: Easy to process and mold: PVC film can be processed in various ways, such as extrusion, blow molding, and calendering, to produce products of different shapes and specifications to meet various application needs. Moreover, PVC film has good flowability during processing, allowing for rapid molding and high production efficiency. Compared to some engineering plastic films that are more difficult to process, PVC film has relatively low processing costs, making it suitable for large-scale production.
Excellent decorative properties: PVC film can be made into products with various colors and surface effects by adding different pigments and additives, such as imitation leather and wood grain effects, exhibiting excellent decorative properties. In the field of architectural decoration, PVC decorative film can be used for furniture veneers, wall decorations, etc., and can replace expensive materials such as natural wood or leather, achieving both aesthetic appeal and economical results.
