BOPP (Biaxially Oriented Polypropylene) and CPP (Cast Polypropylene) are two forms of polypropylene films that are commonly used in packaging.

BOPP films are made by stretching polypropylene in two directions, resulting in a stronger, more durable film with higher stiffness and clarity than CPP films. BOPP films are frequently used in packaging applications requiring high tensile strength and strong optical qualities, such as snack food packaging, candy wrapping, and label lamination.

CPP films, on the other hand, are made by pouring molten polypropylene into a chilled drum, resulting in a softer, more flexible film. CPP films provide good sealability, moisture barrier, and heat seal strength, making them ideal for packaging fresh fruit, bakery products, and non-food items such as flowers, textiles, and clothing.