2.4 Photoresist Water Resistance
A silk screen printing plate made of five kinds of photosensitive adhesives with different compositions was immersed in water and taken out after 48 hours, and the surface of the screen was repeatedly adhered with a self-adhesive tape to observe the condition of the film, as shown in Tab.2. From the experimental results, it can be concluded that when the PVA solution:PVAC emulsion is 40:60 and 30:70, the water resistance of the plate is the strongest, because the PVAC has strong adhesion to the screen fiber in the film, so that the plate film can It withstands the soaking and rinsing of water to withstand the printing of water-based inks. At the same time, this compositional ratio also makes the photoresist have a high sensitivity.
A silk screen printing plate made of five kinds of photosensitive adhesives with different compositions was immersed in water and taken out after 48 hours, and the surface of the screen was repeatedly adhered with a self-adhesive tape to observe the condition of the film, as shown in Tab.2. From the experimental results, it can be concluded that when the PVA solution:PVAC emulsion is 40:60 and 30:70, the water resistance of the plate is the strongest, because the PVAC has strong adhesion to the screen fiber in the film, so that the plate film can It withstands the soaking and rinsing of water to withstand the printing of water-based inks. At the same time, this compositional ratio also makes the photoresist have a high sensitivity.
(Author/Huang Yuli, Wang Shufang, Yan Weiqing, Niu Aijie)
Source: "Polymer Materials Science and Engineering"
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