Corona treatment method to increase film surface tension
Apr 19, 2023
In order to improve the surface properties of the PET film, to improve the printing adaptability and the bonding force of the vacuum aluminized layer, corona treatment is usually used to increase the surface tension of the film. However, the corona method has problems such as timeliness, especially in high-temperature, high-humidity environments, and the film tension after corona treatment is easily attenuated. However, there is no such problem in the chemical coating method, so it is favored by the printing industry and the aluminum plating industry.
PET chemical coating series products developed by Wuxi Ximeiling Adhesive Products Co.,Ltd: such as coating with water-soluble polymers, can increase the surface tension of PET films; coating with acrylate emulsions can improve printing adaptability (can be used Water-soluble ink); coated with polyurethane aqueous solution, it can strengthen the bonding force between the aluminized layer and the PET base film, and can increase the thickness of the aluminized layer. In addition, high barrier films and antistatic films can also be prepared by coating method.
