Paper cutter is one of the necessary equipments in printing plants. It is mainly used for cutting paper. Today, mechanized operations are commonly used to reduce the labor intensity of workers. Paper cutter is one of them. The cutting of the paper cutter depends on the blade on the paper cutter, which is one of the important parts of the paper cutter. The sharpness and service life of the paper cutting blade greatly affect the working efficiency of the paper cutting machine.
        When using a paper cutter, pay attention to safety, so safe operation is required. Notes on using cutter blades:
        1. When selecting the material of the blade, the blade should be high-speed steel, and the blade body should be low-carbon steel. Why this is so, because the hardness of the blade determines its durability, so the strength of the blade is high. In this way, the problem of broken knife or chipping is not easy to occur, and the operator is injured.
        2. The grinding angle of the blade is less than or equal to 19-23 °. Such an angle can reduce the pressure on the edge of the paper and avoid rapid wear of the blade.

        3, the choice of blades should be selected according to the type of paper, hard paper, knife passivation fast.