What is BOPP Film?
BOPP (Biaxially Oriented Polypropylene) film is a thermoplastic polymer film made from polypropylene that has been stretched in both machine direction (MD) and transverse direction (TD). This biaxial orientation process gives BOPP film its exceptional mechanical and optical properties.
Key Properties of BOPP Film
- High tensile strength — Excellent durability for packaging applications
- Superior clarity — Light transmission >92%, ideal for retail display
- Low density — 0.91 g/cm³, lightweight and cost-effective
- Moisture barrier — Excellent water vapor barrier properties
- Printable surface — Corona-treated for excellent ink adhesion
- FDA / EU compliant — Food-contact safe for indirect contact applications
How BOPP Film is Made
The production process involves three main steps: extrusion of polypropylene resin, biaxial stretching (sequential or simultaneous), and surface treatment (corona discharge). The result is a film with balanced properties in both directions.
Common Applications
BOPP film is widely used in food packaging (snack bags, confectionery wrappers), labels (pressure-sensitive labels, in-mold labels), lamination (book covers, magazine covers), and industrial packaging.
Why Choose BOPP Over Other Films?
Compared to PET and PE films, BOPP offers the best balance of clarity, strength, moisture barrier, and cost. It is recyclable and meets sustainability goals when compared to multi-layer alternatives.
Looking for more technical specifications? See our BOPP product range or contact our experts for application-specific guidance.