(1) cutting edge, cutting edge material reserved for the upper process, which is mostly used for the processing of composite film and other materials;

(2) cut and cut the broad-width coil into multi-volume and narrow standard scale data;

(3) divide the large diameter data into several smaller volumes, equivalent to multiple volumes and so on. These methods are sometimes used in combination. Regardless of the process used, the data after cutting should reach the corresponding technical indicators: scale requirements (refers to the width and length scale of the cutting data) and quality requirements (smoothness of the material, surface quality, etc.).