The glazing machine is an important equipment for the surface finishing processing of packaging products such as cartons. It plays an important role in improving the surface properties of printed products and improving the wear resistance, stain resistance and water resistance of printed products. For printing and carton enterprises, it is of great significance to select a machine with excellent structure, stable performance, convenient operation, high production efficiency, wide applicability, and good energy conservation. . Therefore, correctly understanding and understanding the structure and characteristics of glazing equipment, mastering the procurement control essentials of glazing machines is an important part of improving production efficiency and product quality.
Using a glazing machine, after some products are calendered, the surface is prone to cracking (thick paper is more obvious).
1. The temperature in the calendering is too high, so that the water content of the printed matter is reduced, and the paper fiber becomes brittle;
2. The pressure in the calendering is large, which makes the printability and flexibility of the print deteriorate.
3. The selection of post-processing conditions is not suitable;
4. Poor suitability after glazing coating.
The solutions for the above are:
1. Reduce the calender drying temperature and take effective measures to change the water content of the printed matter;
2. Reduce the calendering pressure;

3. Adjust the post-processing conditions to match the suitability of the printed matter (after calendering).

After the calender is calendered, the blank part of the printed matter is light-colored, and the cause of discoloration of the light-colored part is:
1. The ink is poorly dried, and the ink layer has poor solvent resistance;
2. The coating solvent has a certain dissolution effect on the ink layer;
3. The coating layer is not completely dried and the solvent residue is high.
The solution is as follows:
1. The printed matter is dried and then glazed;
2. Reduce the amount of solvent in the glazing coating (solvent that dissolves the ink), allowing the solvent to be changed or changing the coating;
3. Increase the drying temperature and reduce the residual solvent content inside the coating.