Metallized polypropylene film (MPP film), as a kind of polymer composite material that combines the performance of polypropylene (PP) materials with the unique functions of metal coating, is becoming increasingly popular in many fields such as electronics and packaging.
The preparation of metallized polypropylene film is a complex and delicate process, involving two key links: the preparation of polypropylene film and the formation of metal coating. The preparation of polypropylene film usually includes steps such as raw material preparation, melt extrusion film formation, room temperature stretching film formation, coating and drying, and winding and finishing. In this process, the high quality and stable performance of the film are ensured by precisely controlling the temperature, speed and additive ratio.
The formation of metal coating depends on vacuum coating technology. The pretreated polypropylene film is placed in the vacuum coating equipment, and the appropriate air pressure and temperature are applied to melt and evaporate the metal material (such as aluminum, zinc aluminum, etc.), and evenly coat it on the surface of the film. This process not only requires a high degree of technical precision, but also embodies the combination of science and art, giving the film a unique metallic luster and electrical properties.
Metallized polypropylene film, with its unique structure and composition, shows versatility and high performance. Its large dielectric constant, high insulation resistance and good tensile strength make this material have unique advantages in the field of capacitor manufacturing. The presence of metal plating also gives the film moisture resistance, flame retardancy and capacitance stability, making it perform well in applications such as meter step-down power supply and carrier signal transmission.
In the field of packaging, metallized polypropylene film also shows extraordinary potential. Its non-toxic, light weight, high strength, good transparency and heat resistance make it an ideal choice for packaging of food, medicine, clothing and other commodities. In particular, its heat sealing and moisture resistance provide a strong guarantee for the long-term preservation of commodities.
The application range of metallized polypropylene film is wide and deep. In the field of electronics, it is widely used to make metallized polypropylene film capacitors, such as CBB21/CBB22 capacitors, CBB13 capacitors, etc. These capacitors play a vital role in electronic products such as meters, communication equipment, and household appliances.
In the field of packaging, metallized polypropylene film has become an ideal material for commodity flexible packaging with its unique optical properties and barrier properties. It can be seen in food packaging, pharmaceutical packaging and daily necessities packaging. Especially in steaming packaging, its heat resistance is fully utilized.
Metallized polypropylene film also shows a wide range of application prospects in the fields of stationery product surface, interlayer and auxiliary film. For example, loose-leaf and protective films of photos and collections benefit from its physical properties and beautiful appearance.
Metallized polypropylene film is becoming a shining pearl in the field of modern electronics and packaging with its unique properties and wide application fields. In the future development, we have reason to believe that it will continue to lead the industry trend and contribute more to the progress and development of human society.
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