BOPS stands out from other plastic sheets due to its unique set of characteristics, tailored to meet diverse application needs:
Exceptional Transparency: With a light transmittance of over 90%, BOPS rivals glass and PET in clarity, making it ideal for packaging where product visibility (e.g., snacks, fresh food) is critical.
High Mechanical Strength: Biaxial stretching aligns the polymer molecules, giving BOPS 2–3 times higher tensile strength and impact resistance than non-oriented PS. It also exhibits good puncture resistance, reducing packaging damage during transport.
Excellent Stiffness & Dimensional Stability: BOPS maintains its shape even under moderate pressure or temperature fluctuations (service temperature range: -40°C to 70°C), avoiding deformation in applications like disposable food containers or display trays.
Good Barrier Performance: It offers moderate resistance to moisture and gases (e.g., oxygen), extending the shelf life of packaged products like baked goods or dried snacks. For enhanced barrier needs, it can be coated with materials like EVOH or aluminum.
Heat Resistance for Processing: While BOPS itself has limited high-temperature resistance, it performs well in thermoforming (a common post-processing step), enabling the production of complex shapes (e.g., blister packs, clamshells) at relatively low temperatures.
Cost-Effectiveness: Compared to PET or PP sheets, BOPS is more affordable while still delivering premium performance, making it a cost-efficient choice for mass-produced packaging.
