Casting is a plastic film production process that begins with the raw material being melted and plasticized through an extruder. It is extruded through a T-shaped die, cast in sheet form onto the surface of a smoothly rotating cooling roll. The film is cooled and set on the cooling roll, then drawn off, trimmed, and finally wound into a finished roll.

Corona treatment is used to improve the adhesion of coatings on plastic films, especially to address adhesion issues in printing on polypropylene or polyethylene films. Corona treatment uses electrostatic discharge to increase the surface tension of the plastic film, making it easier to coat, print, or bond other materials to its surface. This method can effectively improve the wettability of the plastic surface, enhancing the adhesion of printing inks or coatings, improving the quality and appearance of the product.

• Enhanced Efficiency: The corona treatment process boasts a rapid processing capability, facilitating the uninterrupted treatment of substantial material volumes.
• Superior Treatment Outcomes: The application of corona treatment yields a remarkable improvement in the surface quality of materials. It ensures a consistently smooth and uniform finish, significantly augmenting both the chemical and physical attributes of the material's surface.
• Eco-Friendly Methodology: The corona treatment process operates without releasing harmful pollutants into the environment. This green approach aligns with contemporary ecological standards and contributes to a cleaner production cycle, making it a responsible choice for modern manufacturing practices.