When the image is printed, it is printed by adding a scraper to the printing plate, and the printing plate is in line contact with the object to be printed. When the pressure is too high, the contact between the printing plate and the substrate will cause the screen to expand and contract, causing deformation of the printed image. If you cannot print without increasing the pressure, the gap between the layout and the substrate surface should be reduced, so that the pressure of the scraper can be reduced.
Screen printing is the printing with the smallest printing pressure among various printing methods.
Tensiometer is an important testing instrument to check the quality of polyester mesh plates. There are two types of tensiometers: mechanical and electronic. The unit for measuring tension is expressed in Newtons / cm. Tension can also be expressed as a relative value. The centimeter tension meter is a kind of tension that is expressed by relative values.It is calculated by the value (mm) of the retention of the screen by the weight of the tension meter.The tension value can be obtained directly from the indicator plate or from the control plate. There are two types of manual operation and mechanical operation. In order to ensure that the required tension for plate making is obtained, the tension meter should be used during or after the stretching process.
The mesh ruler is called the theodolite density meter. It is mainly used to measure the mesh of various polyester mesh. There are two types of mesh ruler: glass plate type and observation piece type. The measurement method is that when measuring, first make the screen in a translucent state or place it on the plate, place the mesh ruler on the screen, and then slowly move the mesh ruler in the screen line to make the mesh The vertical line on the ruler is parallel to the warp or weft of the screen.At this time, due to the overlapping effect of the screen's warp and weft and the solid line on the mesh ruler, a rhombus pattern is formed on the mesh ruler, and the mesh pointed by the diagonal diagonal of the pattern The corresponding scale number on the ruler is the number of screens (inches or centimeters) measured. Mesh ruler is a commonly used tool for measuring the polyester mesh size. Usually, to maintain the accuracy of the measuring instrument and the accuracy of the measurement data, it is necessary to keep the mesh ruler clean to prevent scratches and bruises on the mesh ruler. Wipe the instrument clean and keep it in a safe place.
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