The concept of the angle of the stretcher refers to the angle formed by the warp and weft (wire) of the screen and the edge of the frame. There are two forms of stretch nets, one is a stretch net and the other is a diagonal stretch net. Below, the MAISHI staff will explain the method of stretching the screen under the screen printing mesh.
The positive stretch net is that the warp and weft of the screen are parallel and perpendicular to the four sides of the frame. That is, the warp, weft and the frame edge are 90 degrees.
The skewed stretch net means that the warp and weft of the screen are at an angle to the four sides of the frame. The use of the stretch net form of the stretch net is more convenient to operate. Since the screen can be fully utilized, the trim of the screen can be saved and the waste of the screen can be reduced. ,
It is worth noting that the screen printing screen printing is prone to moiré in the form of screen printing, so the color printing usually does not use the positive stretching net. The use of oblique meshing is beneficial to improve the printing quality, and it also has a certain effect on increasing the amount of ink leakage. The disadvantage is that the screen waste is large. In the printing precision requirements and color printing, the choice of the angle of the stretch screen has a direct impact on the printing quality. If the angle of the mesh is not suitable, the moiré will appear. Therefore, the printing angle of the general replica is usually 20 degrees to 35 degrees. When printing a high-resolution circuit board, because the mesh size is higher, the angle of the mesh is 45 degrees. Suitable. In the actual stretching of the net, in order to reduce the waste of the screen, generally copying the printed matter often uses a positive stretch net.
The above is a detailed explanation of the screen printing mesh stretch net, the stretch net can refer to these data according to the actual situation to stretch the net to obtain the ideal stretch tension.