What Is an OPP Film?
OPP (oriented polypropylene) film is a versatile plastic film made by biaxially stretching polypropylene, a widely used plastic. Known for its excellent transparency, rigidity, moisture resistance, and printability, OPP film is a preferred material in various packaging applications. Despite its lower heat sealability and tear resistance, its benefits make it a popular choice over cast polypropylene (CPP) film, which lacks the superior transparency of OPP.
Uses of OPP Films
OPP film’s unique properties make it ideal for:
- Product Packages: Utilized for its protective qualities in retail, enhancing product visibility while ensuring durability during transport and display.
- Food Packages: Chosen for food packaging due to its strength, moisture resistance, and easy-tear features, improving consumer convenience and product freshness.
Principle of OPP Films
OPP film capitalizes on polypropylene’s inherent thermal and mechanical robustness, with biaxial stretching enhancing its tensile strength, thermal stability, and moisture barrier properties. This process not only boosts the film’s physical attributes but also its optical quality, providing a clear and attractive finish for printed materials.
Other Information on OPP Films
How OPP Film Is Manufactured
OPP film production involves biaxially stretching a polypropylene film first longitudinally and then transversely. This simple yet effective method improves the film’s physical and optical properties while maintaining cost-effectiveness by avoiding the need for specialized equipment.