The uneven gloss of aluminum die-cast painting was a defect that diminished its sense of luxury.
The cause of gloss unevenness is the difference in film thickness and drying speed. By managing the drying time within plus or minus 5 minutes, the improvement rate is 80 percent.
Gloss unevenness is a defect where the gloss of the coating surface varies by location, appearing mottled. Particularly in automotive interior parts, it diminishes the sense of luxury, and data shows that customer satisfaction can decrease by 30-40 percent. Variation in gloss due to film thickness: When the film thickness changes by plus or minus 30 microns, the angle of light reflection changes, resulting in a 10-15 percent variation in gloss. Strict control within plus or minus 20 microns can reduce gloss unevenness by 90 percent. Optimization of the drying environment: The optimal drying time is in an environment with a temperature of 25 degrees and humidity of 50 percent (30 minutes). If the temperature is too high and humidity too low, drying occurs too quickly, causing the solvent to evaporate unevenly, resulting in lower gloss in some areas. Conversely, if the temperature is low and humidity high, drying is delayed, leading to sedimentation. Fine-tuning the baking temperature: Raising the baking temperature from 170 degrees to 180 degrees changes the curing speed of the resin, resulting in more uniform gloss. However, if raised too much, drips can occur, so strict control within plus or minus 5 degrees is necessary. With our constant temperature and humidity chamber and temperature management system, we achieve a gloss unevenness occurrence rate of 0.1 percent, guaranteeing a luxurious paint finish.
- Company：永和工芸
- Price：Other
