The primary reason for the foaming of glass bottles during high-temperature spray painting is:

1. The coating comes into contact with water or is exposed to high temperatures;

2. The solvent evaporates too quickly, resulting in high viscosity of the coating;

3. Painting before the gas mixed into the coating is fully released;

4. Some solid substances in the coating will automatically differentiate and release gases, which cannot penetrate the coating and cause bubbles.

Solution for high-temperature spray painting of glass bottles:

1. Paint should not come into contact with water during construction, and wet coatings should be avoided from long-term exposure to high humidity environments;

2. Using matching solvents and diluents, the viscosity of the coating should be adjusted appropriately;

3. Add alcohol solvents and defoaming agents.

4. The mixed paint should be cured for the corresponding time before construction

Article source: Glass cover manufacturerwww.yinghuade.com