BOPPFolien

BOPPFolien, short for biaxially oriented polypropylene film, are clear, stiff plastic films made from polypropylene resin by orienting the film in two perpendicular directions. The orientation process, often performed on tenter frames after extrusion, strengthens the film in both machine and cross directions, producing improved mechanical properties, optical clarity and barrier performance compared with unoriented PP film. Typical thickness ranges are about 12 to 40 micrometers, with thinner grades used for high-clarity packaging and thicker grades for labels and laminates.

Key properties of BOPP films include high tensile strength and stiffness, excellent gloss and clarity with low haze, and good chemical resistance. They also offer an effective moisture barrier relative to many other plastics. However, their oxygen and aroma barriers are limited unless additional barrier layers are applied, or the film is metallized or coated.

Surface properties are non-polar, so printing and adhesion often require surface treatment such as corona or plasma discharge to improve ink uptake. BOPP can be metallized to create a metallic appearance and further enhance barrier properties, or coated to tailor sealability and surface functionality.

Applications and markets are broad: primary packaging films for snacks, confectionery, baked goods and dried foods; laminating films in combination with other polymers; label stock and tape backing; and reflective or decorative用途 in various packaging formats. End-of-life considerations center on recyclability; BOPP is generally recyclable in polypropylene streams, though metallized or coated variants may complicate recycling.