Improve the surface tension and adhesive properties of pet films
Jul 01, 2023
The surface tension of PET polyester film is low, and the affinity for coating liquid is small, and the crystallinity of PET polyester film is high. sex is relatively poor.
Therefore, treating the surface of the PET film substrate can increase its surface tension, reduce its surface crystallinity, and improve its surface bonding performance.
At present, the commonly used treatment methods for PET polyester film at home and abroad include chemical oxidation treatment, photochemical treatment, plasma treatment, corona discharge treatment and primer treatment.
Photochemical treatment and corona treatment have a certain timeliness, and the treatment cost is relatively high; primer treatment is not affected by changes in temperature and humidity, and is suitable for product assembly line production.
