What Causes Paint Bubbling?
1 Answers
The reasons for paint bubbling are as follows: 1. Exposure to sunlight or hot weather: Paint or water-based paint applied outdoors is often exposed to direct sunlight, causing the surface to heat up and eventually bubble. Another possible reason is high-temperature weather, where the production line temperature is too high, causing workers to sweat profusely during operation. Sweat droplets may fall onto the painted parts, and after cleaning between paint applications, small amounts of salt residue remain on the surface. When covered with paint film, the salt absorbs moisture in high temperatures, and the moisture expands outward when heated again, repeatedly pushing the paint film to form small bubbles. 2. Poor substrate quality: The quality of the decorated substrate is poor, such as high moisture content, which can cause the paint surface to become damp and bubble during use. 3. Incorrect painting: Not following the correct painting requirements, such as applying paint before the putty is dry. After painting, inadequate waterproofing measures, such as exposing the freshly dried paint to a humid environment or direct rain, can also cause bubbling. 4. Insufficiently dry construction tools: For example, compressors or air hoses may contain excessive moisture, or water may come into contact with the paint surface during the construction process.
