What is the impact of different spraying processes on the surface of thermos cups on the printed pattern effect?

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. The surface of the water cups was sprayed with white powder, http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmlbut 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. What caused this?http://www.zhanyict.com/en/ProductsDetail-VB-10449.html Today, the editor will share with you the impact of different spraying processes on the effect of printed patterns.

Solutions to the problem of pattern ink adhesion

1. Optimize the spraying process

By optimizing the spraying process, the surface roughness can be increased and the ink adhesion can be improved. http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmlMulti-layer spraying or special coating processes can be used to ensure that the surface has sufficient roughness.

2. Choose the right coating material

Choose a coating material that is compatible with the ink to ensure that the ink can be firmly adsorbed on the surface. http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmlYou can test the compatibility of different coating materials with the ink through experiments to select the best material.

3. Control spraying process parameters

Reasonably control spraying thickness, spraying speed and other process parameters to ensure that the coating thickness is moderate, http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmlwhich can provide sufficient roughness without affecting the clarity of the pattern.

4. Use special ink

Use ink specially designed for the surface of the thermos cup to ensure that the ink has good compatibility with the coating material and improve adhesion.

5. Surface treatment

Before spraying, the surface of the thermos cup should be properly treated, such as cleaning and polishing, http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmlto remove surface impurities, improve the bonding strength between the coating and the substrate, and thus enhance the adhesion of the ink.

If the above content is expressed in a more straightforward way, the smoother the surface of the thermos cup, the worse the adhesion of the printed pattern will be, http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmland the rougher the surface, the better the adhesion of the print; but if the selected printing ink has a high degree of compatibility with the surface coating of the water cup, it does not matter whether the surface of the thermos cup is painted or powdered.

Finally, some friends will definitely ask, which of the following situations do you describe at the beginning? http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmlBecause the cups purchased by the customer were not completed at the same time, the plastic powder provided by the paint factory had obvious differences in the two mixing ratios, and the properties of one of the coatings were not highly compatible with the customer's printing ink, which led to the above situation.

After communicating with the customer, there are two solutions. One is that the customer communicates with the printing material supplier and directly replaces the compatible ink for printing; the other is that we provide the customer with special potions, and the customer wipes the surface of the water cup before printing the pattern, http://www.zhanyict.com/en/ProductsDetail-VB-10449.htmland then prints, and then uses UV and other factory inspection time after printing. These two solutions can solve the problem of printing ink falling off after testing. In the end, the customer chose the first solution, which is simpler and easier to control.