Reasons and treatment methods for the lack of gloss on the surface of printed color steel plates

2025-09-05 10:13:25

The surface of Printed color steel plates is relatively glossy, and there are various reasons for the lack of gloss. When producing and processing, everyone should pay attention to finding the cause of the lack of gloss and solve it, otherwise the product's performance will be affected to some extent. Below, we will introduce the reasons and treatment methods for the lack of gloss on the surface of the plate.

Reason for occurrence:

1. The reason for the formula of printed color steel plate coating. Excessive pigment, filler, and solvent content, insufficient fineness, or dust in the coating.

2. The surface of the substrate is rough or has oil stains, moisture, wax, and other substances, and the coating is not completely cured.

3. Insufficient mixing of the paint before use on the machine results in the solid particles of the paint settling at the bottom of the bucket, leading to less pigment in the bucket during construction.

4. Excessive use of diluent in the coating dilutes the effect of the glossy coating.

5. The surface coating is too thin, and the temperature in the roller coating chamber is too high or too low during construction.

6. The temperature of the curing oven is set too high, the circulation of hot air in the oven is insufficient, and the coating is overheated, causing aging of the eye color and a decrease in gloss.

Handling method:

1. Check whether the fineness of the coating on the machine meets the process requirements.

2. The printing color steel plate coating should be thoroughly mixed and filtered before being used on the machine, and too much diluent should not be added.

3. Control the humidity in the roller coating chamber to prevent moisture from entering the coating.

4. Check if the diluent matches the coating to ensure the wet film thickness of the topcoat is not too thin.

5. The temperature setting of each section of the solidification furnace should be reasonable, avoiding being too high or too low.

The above are the main reasons and solutions for the lack of gloss on the surface of printed color steel plates. If you want the glossiness to not be affected, you need to master the correct operating techniques. During the process of coating mixing, pay attention to the correct mastery of coating methods to ensure that the thickness of the coating film meets the requirements.