Reasons and treatments for the lack of luster on the surface of the printing plate

The surface of printing plate is relatively glossy, and there are many reasons for the lack of luster. In the process of production and processing, everyone should pay attention to find the reasons for the lack of color and luster and solve them, otherwise it will affect the use of the product. Under certain influence, the following introduces you to the causes of no luster and the treatment method.

Reasons for no luster of printing plate:

1. The reason of coating formula, too much pigment, filler and solvent in the coating, insufficient fineness or dust.

2. The surface of the substrate is rough or has oil, moisture, wax, etc. and the coating is not fully cured.

3. Paint is not completely mixed before using the machine and the solids of the paint settle at the bottom of the bucket, so that there is less paint in the working bucket during the work.

4. Excessive use of thinner in the paint dilutes the effect of the glossy paint.

5. The surface coating of the printing plate is too thin during construction, and the room temperature of the roller coating room is too high or too low.

6. The temperature of the curing oven is set too high, the hot air circulation in the heating oven is insufficient, and the coating is overheated, which will lead to glossy aging of the eyes and reduce the gloss.

The treatment method of no luster of printed board:

1. Test whether the fineness of the machine coating meets the process requirements.

2. Before applying the printing plate coating to the machine, it should be well mixed and evenly filtered, and not too much thinner should be added.

3. Control the humidity of the roller coating room to prevent moisture from mixing into the coating.

4. Check that the thinner matches the coating and make sure that the wet film thickness of the top coat is not too thin.

5. The oven temperature setting of each section of the curing oven should be reasonable to avoid too high or too low.

The above are the main reasons for the lusterless surface of the printing plate and the solution, if it does not affect its gloss, you need to master the correct operating techniques. In the process of paint mixing should pay attention to the correct mastery of the paint method to ensure that the thickness of the coating film meets the requirements.