What is a film former?

The film-forming agent adjusts the photosensitive liquid so that the photosensitive liquid can be easily coated and leveled; it improves the adhesion between the photosensitive layer and the plate base and the photochemical reaction speed of the photosensitive layer, which is beneficial to the photosensitive liquid forming a fixed film on the plate base. layer. The film-forming agent must be well mixed with the photosensitive material and have the same solubility as the photosensitive material, including water solubility, alkali solubility, organic solvent solubility, etc.
Definition: Any polymer that can form a continuous film can be called a film-forming agent.
binder, or Film Former.