Why does the Flat Screen Printing Machine block the network during printing? We need to know the reasons before we can solve the problem. Let us see what causes Flat Screen Printing Machine to block Internet cafes during printing.
First, let’s take a look at the main reasons. Here are some examples:
- The high viscosity of the ink will affect the leakage.
- The particles in the printing ink are larger.
- The ink has poor fluidity when the temperature is low.
- After the ink dries on the screen printing plate, it will condense.
How to solve network blocking? Let's take a look together:
In the printing process of the Flat Screen Printing Machine, the viscosity of the ink increases due to the volatilization of the solvent, and instantaneous drying is formed at the mesh to block the mesh (conjunctiva after drying) and cause the blocking of the network. Especially when using evaporative drying ink, this kind of phenomenon is more prominent. Evaporative drying inks are dried by using solvents, so when printing on the Flat Screen Printing Machine, an appropriate solvent must be selected to control the drying speed. In addition, attention must be paid to the ventilation and temperature and humidity conditions of the production workshop. The influence of climate should be considered when selecting ink. Generally, quick-drying ink is used in winter, and late-drying ink is used in summer. In spring and autumn, use ink with a dryness between the above two.
Talking about how to solve the problem of blocking the network after printing by the Flat Screen Printing Machine from the perspective of ink manufacturing and use methods. For the blockage caused by the large ink particles, it can be solved from the production of ink. The main method is to strictly control the ink particle size not to be too large. From the perspective of modern manufacturing ink technology, it is not difficult to solve the problem of large ink particles.
During the printing process of the Flat Screen Printing Machine, the viscosity of the ink increases and the main reason for blocking the network is: the ink on the screen printing plate evaporates due to the solvent, which causes the viscosity of the ink to increase, and the blocking phenomenon occurs. If the area of printed graphics is relatively large, the ink consumption on the dead screen printing plate will be large, and the blocking of the network will be small. If the graphic area is small, the ink consumption on the screen printing plate is small, and the ink travels on the screen printing plate for a long time. As the ink moves on the screen printing plate many times, the viscosity gradually increases and it is easy to cause blockage. Under this circumstance, it is necessary to change to new ink frequently to prevent the occurrence of blocking.
The poor fluidity of Stenter ink will cause blockage when the ink does not pass through the screen. This situation can be solved by reducing the ink wetness and improving the fluidity of the ink. In addition, the mesh size and opening area of the selected screen are smaller than the particle size of the ink, and it is also one of the reasons why the ink with extremely fine particles is not easy to pass through the mesh and block the screen.