～What is the hardness of the squeegee?～
In last month's issue, I wrote about the attack angle of the squeegee. I raised the issue that the actual attack angle may be small due to the deflection of the squeegee.
If that is the case, the actual angle of attack should decrease and the print film thickness should increase as the squeegee's rubber hardness decreases and deflection increases. Figure 1 shows this conceptual diagram.
If that is the case, the actual angle of attack should decrease and the print film thickness should increase as the squeegee's rubber hardness decreases and deflection increases. Figure 1 shows this conceptual diagram.
Therefore, we investigated the print film thickness when the printing conditions were the same and only the rubber hardness was changed.
It can be considered that the actual angle of attack between the squeegee and the plate has changed due to the deflection of the rubber.
Does changing the hardness of the squeegee mean changing the actual angle of attack?
Does changing the hardness of the squeegee mean changing the actual angle of attack?
I feel that we can develop new squeegees by changing the concept of squeegees.
See Figure 2.It can be seen that the print film thickness increases as the rubber hardness decreases.
