How do different spraying processes on the surface of thermos bottles solve the problem of pattern ink adhesion?

Hello everyone, "Dong Dong Talk Cup" is here. Today, the editor encountered a problem reported by a customer. The other party purchased two types of water cups from us. http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlThe surface of the water cups was sprayed with white powder, but the production was not at the same time. The customer used printing to present the pattern on the surface of the water cup, but found a problem.

The same pattern was printed on the same printing equipment with the same ink on the same day. The adhesion of the pattern on the two different water cups was completely different. One was very firm, and the other was relatively poor. http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlWhat caused this? Today, the editor will share with you how to solve the problem of pattern ink adhesion?

The influence of different spraying processes on the printing pattern effect

1. Traditional spraying process

The traditional spraying process usually adopts single-layer spraying, which has a relatively smooth surface but lacks sufficient roughness. http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlUnder this process, the ink of the printed pattern is difficult to be firmly adsorbed, and it is easy to fall off, blur and other problems.

2. Multi-layer spraying process

The multi-layer spraying process forms a thicker coating through multiple spraying, and the surface has a certain degree of roughness. http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlUnder this process, the ink of the printed pattern can be better adsorbed on the surface, and the pattern effect is clearer and more durable.

3. Special coating process

Special coating processes such as frosted and matte have higher surface roughness and can provide better ink adhesion. http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlUnder this process, the printing effect of the pattern is the best, the pattern is clear, and it is not easy to fall off.

Analysis of the causes of ink adhesion differences

1. Surface roughness

Surface roughness is a key factor affecting ink adhesion. A rough surface can increase the contact area between the ink and the substrate and improve adhesion. http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlThe traditional spraying process has a smooth surface and poor ink adhesion; while the multi-layer spraying and special coating process has a rough surface and good ink adhesion.

2. Coating material

The properties of the coating material will also affect the adhesion of the ink. Some coating materials have poor compatibility with the ink, http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlmaking it difficult for the ink to be firmly adsorbed. Selecting the right coating material is an important measure to improve the adhesion of the ink.

3. Spraying process parameters

Spraying process parameters such as spraying thickness and spraying speed will also affect the adhesion of ink. Too thin a coating may cause the ink to not be firmly adsorbed, http://www.zhanyict.com/en/ProductsDetail-VB-10497.htmlwhile too thick a coating may affect the clarity of the pattern.