Causes solutions of blockage during water-based ink screen printing

Due to the safety environmental protection characteristics of water-based inks, the scope of application continues to expand. With the rapid development of printing machines technologies, various materials can be printed with water-based inks, such as plastic breathable films, cartons, plastic woven bags, corrugated paper, etc. In the process of printing with water-based ink, some small problems will inevitably occur. Here we will mainly talk about how to solve the problem of blocking the plate.

There are several situations for blocking of water-based ink:

1. The drying speed is too fast to cause the ink to dry in the net hole. Here we have to analyze what is causing it, whether it is too high temperature, too much air volume abnormal pH value, solve the problem of excessive drying for various situations. It is a common method to add a slow-drying agent, which can slow down the drying time of ink prevent skin formation on the surface of ink, but it is necessary to control the dosage.

2. Check whether the viscosity of the ink is too high: when the viscosity is too high, it may also cause blockage. At this time, under the premise of ensuring the printing speed flowability, the viscosity of the ink should be reduced, it should be noted that the thinner cannot be added Too much, otherwise it may cause bubbles affect the quality of printing.

3. If it is screen printing, you can check whether the cell is too shallow, you can consider increasing the cell depth appropriately.

Other reasons such as downtime other reasons for blocking version need to be resolved through management means, such as non-stop version of downtime.