1. Paste plate, also known as blockage, refers to the phenomenon that the through-hole portion of the screen printing plate cannot transfer ink to the substrate during printing. The appearance of this phenomenon will affect the quality of printing. If it is serious, it will not be able to print normally.
2. Pinhole phenomenon, pinhole phenomenon is the most headache for the staff engaged in glass screen printing. There are many reasons for pinholes to occur, many of which are currently unexplained, and some are quality management issues. Pinholes are one of the most important inspection items in a printed product inspection.
3. The size of printing mesh is enlarged, and the main reason for the enlargement of the printing size is that the viscosity of the ink is relatively low and the fluidity is too large; the size of the screen printing plate is enlarged during the production, and the reason for the enlargement of the printing size is to prevent the ink from being excessively fluid. After the ink overflows to the periphery, the printing size becomes large, and it is conceivable to increase the viscosity of the ink to reduce the fluidity of the ink. When making screen printing mesh, the quality of the screen plate should be strictly guaranteed to ensure the tension of the screen printing mesh.
In addition to the above problems, other problems may occur during the glass printing process. Nowadays glass screen printing is increasingly used in high-tech, high value-added fields. Therefore, problems found in the screen printing process and solved are crucial to the development of glass printing by printing mesh.