What is the difference between OPP and Bopp film?

OPP (Oriented Polypropylene) and BOPP (Biaxially Oriented Polypropylene) are both types of polypropylene films, but they differ in their production process and properties.

Key Differences:

1. Orientation:

  - OPP Film: Oriented in one direction, typically lengthwise, which gives it some strength and clarity.

  - BOPP Film: Biaxially oriented, meaning it is stretched in both length and width. This provides greater strength, flexibility, and durability.

2. Properties:

  - OPP Film: Generally offers good clarity and is less expensive, but it is not as strong or versatile as BOPP.

  - BOPP Film: Exhibits higher tensile strength, better moisture and gas barrier properties, and is more resistant to temperature variations. It also has a smoother surface for printing.

3. Applications:

  - OPP Film: Commonly used for basic packaging, labels, and lightweight wraps.

  - BOPP Film: Widely used in food packaging, protective coverings, and high-quality printing applications due to its superior characteristics.

In summary, while both films are polypropylene-based, BOPP film's biaxial orientation results in enhanced strength and performance compared to standard OPP film.