Analysis of Causes for Floor Coating Color Bleeding
1. Insufficient construction interval between two consecutive processes
In multi-layer construction, if the next process is carried out before the previous one reaches the surface-dry condition, the newly applied paint layer will penetrate the underlying paint. If the colors of the two coats are identical, the impact is less noticeable. However, if the colors differ, it can result in color intermingling, with varying degrees of penetration at different locations, ultimately leading to highly disordered color effects.
2. Insufficient coverage of the topcoat
After the epoxy floor coating is completed, what users see is the color of the topcoat, so its coverage directly affects the color effect. In practical production, darker color series generally have better coverage, while lighter color series tend to exhibit weaker coverage. If dark-colored paint is used in the lower layers but the topcoat lacks sufficient coverage, common issues include a dull surface color effect, light reflection mixed with the hues of the dark color series, and significant color variations in areas with uneven topcoat application.
3. When mixing paints, the inclusion of other pigments is a common issue in projects involving multiple colors. Often, the same mixer is used for different colored materials without cleaning, leading to the blending of different paint colors. This results in incorrect color application and the intermixing of various iridescent effects.
preventive measures
1. Strictly adhere to the construction requirements. Different paint materials have varying curing times. It is crucial to follow the curing reaction cycle and actual temperature conditions for proper construction. This not only prevents color bleeding but also serves as an essential measure for ensuring project quality.
2. Properly Coordinate Floor Paint Colors
When using a light-colored topcoat, the epoxy primer and intermediate coat should adopt a similar color scheme or a transparent, colorless series to minimize the impact of the base color on the topcoat. Additionally, applying multiple layers of topcoat through repeated overcoating can further enhance the color's accuracy and vibrancy.
3. Proper Application of Epoxy Primer
We generally recommend that users prioritize the application of primer whenever possible, as it not only enhances adhesion but also provides excellent sealing properties. This helps reduce damage to the floor caused by water seepage and salt efflorescence, while effectively minimizing the discoloration effect of the base color on the topcoat.
4. Avoid mixing different colors of paint. Do not use the same mixer to prepare epoxy floor paint of different colors, or clean it thoroughly before reuse. Prevent the mixing of other colored pigments or paint during the construction process.