BOPP film (biaxially oriented polypropylene film) and BOPET film (biaxially oriented polyester film) are two important materials in the packaging industry. They each have unique performance advantages and have shown excellent performance in different application fields.
BOPP film characteristics
BOPP film, with its high tensile strength, excellent impact strength, excellent rigidity and toughness, has become a leader in the packaging field. It has good transparency and can clearly display the products in the package and enhance the visual effect of the products. However, the surface energy of BOPP film is low, so corona treatment is required before gluing or printing to improve its printing adaptability. This treatment makes BOPP film widely used in the surface material of composite film, such as the packaging of shampoo, bath products, daily chemical laundry detergent and other products. In addition, BOPP film can also be made into self-adhesive labels, namely Label film, which is widely used in the labeling of various commodities, providing convenience for the identification and traceability of commodities.
BOPET film characteristics
Compared with BOPP film, BOPET film is known for its high strength, high rigidity, high transparency and high gloss. Its tensile strength is 3 times that of PC film and nylon film, and its impact strength is far higher than that of BOPP film, reaching 3-5 times. BOPET film also has excellent wear resistance, folding resistance, pinhole resistance and tear resistance, which makes it perform well in packaging occasions that are subjected to large external forces and friction. In addition, BOPET film also has good heat resistance, boiling resistance, low-temperature freezing resistance, as well as good oil resistance and chemical resistance. These characteristics make BOPET film widely used in food packaging, pharmaceutical packaging, electronic product packaging and other fields.
Application Comparison
In the field of Printing film, BOPP film and BOPET film have their own advantages. BOPP film is often used for packaging that requires exquisite printing effects, such as high-end cosmetics, gift boxes, etc., due to its good printing adaptability. Its clear transparency and good printing effect can fully display the exquisite appearance of the product and enhance the added value of the product. BOPET film, due to its high strength and wear resistance, is more suitable for packaging that needs to withstand large external forces and friction, such as electronic product packaging, heavy cargo transportation packaging, etc. The wear resistance and tear resistance of BOPET film can effectively protect the products in the package from damage and ensure the safety and integrity of the products.
In summary, BOPP film and BOPET film have their own characteristics in performance and application, and each has shown excellent performance in different fields. With the continuous development of the packaging industry and the continuous improvement of consumers’ requirements for packaging quality, the application prospects of BOPP film and BOPET film will be broader.
