Flexo printing machine slitting of rolled products can be divided into vertical slitting and horizontal slitting. For longitudinal multi-slitting, the tension of the die-cutting part and the pressing force of the glue must be well controlled, and the straightness of the cutting (cross-cutting) blade should be checked before installation. When installing the broken single blade, use the 0.05mm standard size feeler gauge (or 0.05mm copper sheet) in the "feel gauge" to place it under the shoulder iron on both sides of the broken knife roll, so that the blade mouth sags; The iron is about 0.04-0.06mm higher; coarsely adjust, tighten, and lock the bolts so that the compression gaskets are flat on the surface of the broken body. The bolt tightening extends from the middle to both sides, and the force is evenly applied to avoid the knife edge not being straight and bumped. Then remove the 0.05mm cushion on both sides, stick sponge glue on it, and try to cut the sheet on the machine. When cutting, it is better to have no excessive noise and vibration, and it shall not affect the normal printing of the machine. When sticking the sponge glue, the oil on the roller body should be cleaned.

The scraping felt provided by the manufacturer should be used on the shoulder iron of the broken knife, and a special person should drip an appropriate amount of lubricating oil every day; and the dirt on the felt should be cleaned regularly to prolong the service life of the roller body. When cutting vertically and horizontally, be sure to pay attention to the position of the corner line and the tangent line (knife line).