The indentation line of the slitter blade is not straight:
1. The pressure line of the slitter blade is too shallow, and the folding line is uneven, which affects the appearance of the box;
2. The paper feeding of the slitter blade is skewed;
3. The upper and lower crimping wheel of the slitter blade is not adjusted correctly.
The cutting edge of the slitter blade is not vertical:
1. The angle of the blade holder of the slitter is not correct;
2. The slitter blade is not in the center of the knife slot; 3. The slitter blade is sharpened.
The slitting machine blade is skewed at the tail of the cardboard:
1. Improper adjustment of the paper feeding positioning baffle of the slitter blade;
2. A section of the slitting blade is too blunt, which is different from other blades in linear speed;
3. Improper adjustment of the paper guide wheel of the slitter blade;
4. Improper paper feeding by the slitter blade.
The slitter blade produces burrs:
1. The slitter blade is blunt and should be polished;
2. The overlap of the slitter blade and the knife groove is too shallow;
3. Paper edges and paper lint are drawn into the slot of the slitter blade, which should be thoroughly cleaned before starting;
4. The slot gap of the slitter blade is too large, generally not more than 2.5mm. The indentation line of the slitter blade is easy to break: 1. The base paper is inferior;
