The surface coating process for perfume glass bottles is a critical step in enhancing their aesthetic appeal, texture, and brand recognition. How is the coating applied? This article provides an overview of the process.

Before spraying, use clamps to secure the transparent glass bottles on the production line and clean the glass bottles first. After cleaning, proceed with spraying. To enhance adhesion, we can first spray a coat of primer on the glass bottles.

After the primer has been pre-dried, adjust the color of the pigment according to the pre-production sample. Once the color is adjusted, the glass bottles are rotated at a constant speed on a conveyor belt, and the spray gun sprays evenly from multiple angles to avoid blind spots.

Compare the sprayed color with the pre-production sample to confirm that there are no differences in color, then continue spraying. After spraying, let it sit for 5-10 minutes to allow the solvent to evaporate. Place the sprayed glass bottles in a tunnel oven or baking oven and set the temperature and time according to the type of coating. During the baking process, ensure that the temperature is uniform to prevent local overheating, which can cause the coating to crack or bubble.

Allow to cool naturally to room temperature after baking to prevent sudden cooling from causing the coating to shrink and crack. Inspect the appearance for defects such as sagging, pinholes, or color differences. Conduct a crosshatch adhesion test to ensure the coating does not peel off. Wipe with alcohol or perfume concentrate to test, and the coating must show no discoloration or peeling.

By following the above steps, we can ensure that the coating on the surface of the perfume glass bottle is uniform, has strong adhesion, and has a high-quality texture, while also meeting aesthetic and durability requirements. Different manufacturers will fine-tune the process parameters based on product positioning and coating characteristics to achieve the best results.