In the paper industry, a paper cutter is a device that can cut paper into flat paper. As a traditional product, paper cutter is one of the most important equipments for printing, papermaking and other industries. According to the different cutting knives, it can be divided into throw-knife cutter and flat-knife cutter. According to different control methods, it is divided into full-automatic paper cutter, program-controlled paper cutter, digital display paper cutter and so on. Different paper cutters have different uses, and the price of paper cutters also varies.

         In the cutting process with a paper cutter, the choice of the angle of the cutting edge of the cutting knife is very important. A good paper cutter needs a good blade and knife grinding process. Many users often ignore the problem of the blade during the use of the cutter. If the way, method and angle of sharpening of the cutting blade are not correct, the impact during cutting will increase, causing the safety screw to loosen or even break, eventually causing acute damage.