Recently, I have received many inquiries from readers and friends about why the paint on the surface of the thermos cup always peels off. How can I avoid the paint peeling off? Is there any process that can prevent the paint on the surface of the water cup from peeling off? I will share it with my friends today. I hope this article can give you some help. If there are any inaccurate opinions, please point them out and I will definitely correct them.
The surface spraying techniques of thermos cups currently sold on the market are roughly as follows: spray paint (gloss paint, matte paint). There are many kinds of paint: pearlescent paint, rubber paint, ceramic paint, etc. Most factories will use environmentally friendly water-based paint. . Plastic spraying/powder spraying (glossy powder, semi-matte powder, matte powder), the powder includes ordinary powder, water-resistant powder, fine powder, medium coarse powder, coarse powder, etc. The PVD process is also called vacuum plating. If you don’t understand the effect of the PVD process, most of the people who see the high brightness of the surface to achieve a mirror effect and some have a gradient rainbow effect are using the PVD process. The above three processes are the most common ones on the market. For other processes such as printing, polishing, etc., the editor will write another article to share with you.
Comparing the three processes of spray painting, powder spraying and PVD, the PVD process has a thin but hard surface coating due to the production method. After high-temperature baking, the wear resistance is better than that of the spray paint process, but the impact resistance is poor. It will be damaged by external force during use. The coating will peel off, and in severe cases, it will peel off on a large area.
Different coatings used in the spray painting process have different effects. Ordinary paint has average wear resistance and impact resistance, rubber paint is better, and ceramic paint has generally higher baking temperatures and good paint hardness and wear resistance. The performance and impact resistance are both excellent. However, due to the cost and processing difficulty of ceramic paint materials, there are still only a few thermos cups sprayed with ceramic paint on the market.
Plastic spraying is also called powder spraying process. This process itself has high requirements on baking temperature and baking time. At the same time, because the powder spraying process uses an electrostatic adsorption process, the paint adsorption force is strong, and the material itself The hardness is high, so the surface of the thermos cup will be more wear-resistant and impact-resistant after using the plastic spray process. Among the three processes of spray painting, PVD, and powder spraying, the surface coating of the powder spray process is the best in wear resistance, durability, and impact resistance.
Post time: Jan-12-2024