News

Microwave safety is not automatic for all plastics. So, is standard BOPA film microwave-safe? The short answer is generally no. BOPA film is a biaxially oriented nylon with a melting point around 220°C (428°F). However, microwave heating creates hot spots that can exceed this locally. BOPA film also absorbs moisture, which turns into steam under microwave radiation. This steam expansion causes BOPA film to warp, shrink, or even rupture. Unlike polypropylene, BOPA film is not designed for direct microwave exposure. Therefore, understanding these limits is essential for food safety.

BOPA film offers an oxygen barrier of 40–60 cc/m²/day and a moderate moisture barrier. Standard BOPA film excels at aroma retention and mechanical strength. As a surimi packaging film, it prevents oxidation and color change. For BOPA for imitation crab meat, it ensures freshness and visual appeal.