How to deal with the lack of surface brightness during silicone screen printing?
| Common Problem Phenomena | Possible Causes | Solutions |
|---|---|---|
| Stripes/mesh marks on the surface | Improper scraper angle, excessively high mesh count, uneven printing speed | Adjust the scraper angle to 30° - 45°, replace with 80 - 120 mesh screen |
| Hazy surface, no gloss | Silicone contains matte fillers, excessively high vulcanization temperature, rough substrate | Replace with high-gloss silicone without fillers, lower the vulcanization temperature |
| Bubbles/pits on the surface | Silicone not defoamed, much environmental dust, oil on the substrate | Vacuum defoam the silicone for 10 minutes after stirring, clean the environment and the substrate |
| Uneven local brightness | Uneven screen tension, uneven printing force | Re-stretch the screen (ensure uniform tension), practice uniform printing |