What is biaxially oriented polypropylene film?

PVC film science biaxially oriented polypropylene film is due to the orientation of the stretched molecules, so the film has good physical stability, mechanical strength, air tightness, high transparency and gloss, toughness and wear resistance, and is currently the most widely used The thickness of the printed film is generally 20-40 μm, and the most widely used is 20 μm. The main disadvantage of biaxially oriented polypropylene film is poor heat sealability, so it is generally used as the outer film of composite film. For example, it has ideal moisture resistance, transparency, strength, stiffness and printability after being composited with polyethylene film. It is suitable for Pack dry food.