Printing Bopp Film Roll And Bopp Packaging Film

Biaxially oriented polypropylene film (BOPP) is generally a multi-layer co extruded film, which is formed by co extrusion of polypropylene particles into sheets and then stretched in both vertical and horizontal directions. Due to the orientation of stretching molecules, this type of film has good physical stability, mechanical strength, airtightness, high transparency and glossiness, toughness and wear resistance, and is widely used as a printing film with a thickness of 20-40 μ m. The most widely used is 20 μ M. The main drawback of biaxially stretched polypropylene film is its poor heat sealing performance, so it is generally used as the outer layer of composite film. If combined with polyethylene film, its moisture resistance, transparency, strength, stiffness, and printability are ideal, making it suitable for holding dry food. Due to the non-polar surface, high crystallinity, and low surface free energy of biaxially stretched polypropylene film, its printing performance is poor, and its adhesion to ink and adhesive is poor. Surface treatment is required before printing and lamination.