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Deficiencies in the True Stone Paint Process and Improvement Methods

2020-03-03

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During the spraying process of true stone paint, cracks may sometimes appear at the corners where two surfaces meet. This is because the corners experience tension from two different directions during the drying process, which can easily lead to cracking in the coating. On-site solution: If cracks are found at the corners, use a spray gun to apply a thin layer of paint again, wait half an hour, and then spray again until the cracks are covered. For newly sprayed corners, special attention should be paid not to spray too thickly at once. Instead, use a method of multiple thin layers, meaning to re-spray after the surface has dried. The distance of the spray gun should be far, the movement speed should be fast, and the spray should not be directed vertically at the corners; instead, a scattering technique should be used, spraying both surfaces.

Corner cracks

During the spraying process of real stone paint, cracks may sometimes appear at the corners because the corners are where two surfaces meet. If real stone paint is sprayed, during the drying process, two different directions of tension will simultaneously act on the coating at the corners, making it prone to cracking. On-site solution: For the cracked corners, use a spray gun to apply a thin layer again, wait half an hour, and spray again until the cracks are covered; for newly sprayed corners, pay special attention not to spray too thickly at once. Use a thin spray multiple layers method, that is, re-spray after the surface dries, keep the spray gun at a distance, move quickly, and do not spray directly at the corners, but use a scattering method, spraying both surfaces so that the mist edge sweeps into the corner.

Cracks appear on the surface

The main reason may be due to large temperature differences in the weather, suddenly getting cold, causing the drying speed of the inner and outer layers to differ, resulting in cracks as the surface dries while the inside remains wet. The on-site solution is to switch to a small nozzle spray gun, apply thin layers, and try to control the drying speed of each layer, with a slightly longer spraying distance being preferable.

Cracks appear during film formation

During spraying, if the coverage is not uniform enough or too thick, cracks may appear on the surface after the film forms, or even weeks later. In this case, a specific analysis is required. In addition to paying attention to the spraying method during construction, it may be necessary to change the formula and re-test.

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